Add speed_rpm field support for fans

[meetshamsher]

Description

To populate redis DB with fan speed in RPM, for same a new DB entry has been made with "speed_rpm".

Motivation and Context

Currently we are showing fan speed in %age and a new requirement came to populate fan speed in rpm which is not getting saved in redis DB. Therefore one entry has been made as "speed_rpm" to populate fan speed with rpm values.

How Has This Been Tested?

Loaded image in local target and checked for rdis-db data population as show below:
Note: the setup contains two PSU and 4 Fan tray with each two fans.
Checked for redis DB entry is getting updated properly, without affecting current fanshow display.
Note: this is only to update DB with fan speed with RPM values. Along-with existing speed in %age.
Test log :
root@sonic:/home/admin# for k in $(sonic-db-cli STATE_DB KEYS "FAN_INFO|*"); do echo "=== $k ==="; sonic-db-cli STATE_DB HGETALL "$k"; echo; done
=== FAN_INFO|PSU1.fan1 ===
{'presence': 'True', 'status': 'True', 'direction': 'N/A', 'speed': '50', 'speed_rpm': '10080', 'timestamp': '20260602 11:06:27', 'led_status': 'N/A', 'drawer_name': 'N/A', 'model': 'NXA-PAC-500W-PE', 'serial': 'LIT2709A9HY', 'speed_target': '50', 'is_under_speed': 'False', 'is_over_speed': 'False', 'is_replaceable': 'False'}

=== FAN_INFO|fantray1.fan1 ===
{'presence': 'True', 'drawer_name': 'fantray1', 'model': 'NXA-SFAN-35CFM-PE', 'serial': 'DCH2936TJEW25372537A0', 'status': 'True', 'direction': 'exhaust', 'speed': '49', 'speed_rpm': '12134', 'speed_target': '53', 'is_under_speed': 'False', 'is_over_speed': 'False', 'is_replaceable': 'False', 'timestamp': '20260602 11:06:27', 'led_status': 'green'}

=== FAN_INFO|fantray2.fan2 ===
{'presence': 'True', 'drawer_name': 'fantray2', 'model': 'NXA-SFAN-35CFM-PE', 'serial': 'DCH2936TJ9625372537A0', 'status': 'True', 'direction': 'exhaust', 'speed': '49', 'speed_rpm': '10305', 'speed_target': '53', 'is_under_speed': 'False', 'is_over_speed': 'False', 'is_replaceable': 'False', 'timestamp': '20260602 11:06:27', 'led_status': 'green'}

=== FAN_INFO|PSU2.fan1 ===
{'presence': 'True', 'status': 'True', 'direction': 'N/A', 'speed': '50', 'speed_rpm': '9952', 'timestamp': '20260602 11:06:27', 'led_status': 'N/A', 'drawer_name': 'N/A', 'model': 'NXA-PAC-500W-PE', 'serial': 'LIT2709A9DV', 'speed_target': '50', 'is_under_speed': 'False', 'is_over_speed': 'False', 'is_replaceable': 'False'}

=== FAN_INFO|fantray2.fan1 ===
{'presence': 'True', 'drawer_name': 'fantray2', 'model': 'NXA-SFAN-35CFM-PE', 'serial': 'DCH2936TJ9625372537A0', 'status': 'True', 'direction': 'exhaust', 'speed': '49', 'speed_rpm': '12026', 'speed_target': '53', 'is_under_speed': 'False', 'is_over_speed': 'False', 'is_replaceable': 'False', 'timestamp': '20260602 11:06:27', 'led_status': 'green'}

=== FAN_INFO|fantray3.fan1 ===
{'presence': 'True', 'drawer_name': 'fantray3', 'model': 'NXA-SFAN-35CFM-PE', 'serial': 'DCH2936TJZK25372537A0', 'status': 'True', 'direction': 'exhaust', 'speed': '49', 'speed_rpm': '12162', 'speed_target': '53', 'is_under_speed': 'False', 'is_over_speed': 'False', 'is_replaceable': 'False', 'timestamp': '20260602 11:06:27', 'led_status': 'green'}

=== FAN_INFO|fantray4.fan2 ===
{'presence': 'True', 'drawer_name': 'fantray4', 'model': 'NXA-SFAN-35CFM-PE', 'serial': 'DCH2936TJZT25372537A0', 'status': 'True', 'direction': 'exhaust', 'speed': '48', 'speed_rpm': '10246', 'speed_target': '53', 'is_under_speed': 'False', 'is_over_speed': 'False', 'is_replaceable': 'False', 'timestamp': '20260602 11:06:27', 'led_status': 'green'}

=== FAN_INFO|fantray4.fan1 ===
{'presence': 'True', 'drawer_name': 'fantray4', 'model': 'NXA-SFAN-35CFM-PE', 'serial': 'DCH2936TJZT25372537A0', 'status': 'True', 'direction': 'exhaust', 'speed': '49', 'speed_rpm': '12053', 'speed_target': '53', 'is_under_speed': 'False', 'is_over_speed': 'False', 'is_replaceable': 'False', 'timestamp': '20260602 11:06:27', 'led_status': 'green'}

=== FAN_INFO|fantray1.fan2 ===
{'presence': 'True', 'drawer_name': 'fantray1', 'model': 'NXA-SFAN-35CFM-PE', 'serial': 'DCH2936TJEW25372537A0', 'status': 'True', 'direction': 'exhaust', 'speed': '49', 'speed_rpm': '10325', 'speed_target': '53', 'is_under_speed': 'False', 'is_over_speed': 'False', 'is_replaceable': 'False', 'timestamp': '20260602 11:06:27', 'led_status': 'green'}

=== FAN_INFO|fantray3.fan2 ===
{'presence': 'True', 'drawer_name': 'fantray3', 'model': 'NXA-SFAN-35CFM-PE', 'serial': 'DCH2936TJZK25372537A0', 'status': 'True', 'direction': 'exhaust', 'speed': '49', 'speed_rpm': '10285', 'speed_target': '53', 'is_under_speed': 'False', 'is_over_speed': 'False', 'is_replaceable': 'False', 'timestamp': '20260602 11:06:27', 'led_status': 'green'}

root@sonic:/home/admin# sonic-db-cli STATE_DB KEYS 'FAN_INFO|*' | sort | while read -r k; do printf '%-28s %s\n' "$k" "$(sonic-db-cli STATE_DB HGET "$k" speed_rpm)"; done
FAN_INFO|fantray1.fan1 12134
FAN_INFO|fantray1.fan2 10325
FAN_INFO|fantray2.fan1 12026
FAN_INFO|fantray2.fan2 10305
FAN_INFO|fantray3.fan1 12162
FAN_INFO|fantray3.fan2 10285
FAN_INFO|fantray4.fan1 12053
FAN_INFO|fantray4.fan2 10246
FAN_INFO|PSU1.fan1 10080
FAN_INFO|PSU2.fan1 9952
root@sonic:/home/admin#

Additional Information (Optional)

Related sonic-platform-common PR : sonic-net/sonic-platform-common#753

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: meetshamsher / name: Sardar Shamsher Singh (5b9d843)

[azure-pipelines]

Azure Pipelines:
There may be pipelines that require an authorized user to comment /azp run to run.

[mssonicbld]

/azp run

[azure-pipelines]

Azure Pipelines:
Successfully started running 1 pipeline(s).

[mssonicbld]

/azp run

[azure-pipelines]

Azure Pipelines:
Successfully started running 1 pipeline(s).

[mssonicbld]

/azp run

[azure-pipelines]

Azure Pipelines:
Successfully started running 1 pipeline(s).

[mssonicbld]

Hi, there are workflow run(s) waiting for approval, you may be first-time contributor. I will notify maintainers to help approve once PR is approved. Thanks!

_{---Powered by SONiC BuildBot}

[meetshamsher]

@maintainer Please add reviewer for this PR. It seems I don't have permission to add any reviewer.
Any platform side reviewer should be fine like keboliu, Junchao-Mellanox, lguohan, judyjoseph,...
Also if possible please enable write permission for me, so that i can add reviewer by myself.

[Verma-Anukul]

@YairRaviv @prgeor @keboliu @judyjoseph @micas-net @abelamit @vvolam

Please review this PR