[action] [PR:15818] [syncd.sh] Clear semaphore before updating firmware

[mssonicbld]

Why I did it

The hw resources should be released before updating firmware.

How I did it

Added logic to release hw resources in syncd.sh script

How to verify it

Scenario:

1. Write a bash script to kill mlxfwmanager process in the infinite loop and run it in the background.

#!/bin/bash

while :;
do
 pkill -9 mlnxfwmanager
done

2. Try to start the mlnfwmanager utility a few times.
3. Stop the bash script.
4. Start the mlxfwmanager and make sure that the semaphore is taken.
5. Run the config reload -y command and make sure that all the dockers are in up state.

Which release branch to backport (provide reason below if selected)

• 201811
• 201911
• 202006
• 202012
• 202106
• 202111
• 202205
• 202211

Description for the changelog

Ensure to add label/tag for the feature raised. example - PR#2174 under sonic-utilities repo. where, Generic Config and Update feature has been labelled as GCU.

Link to config_db schema for YANG module changes

A picture of a cute animal (not mandatory but encouraged)

[mssonicbld]

Original PR: #15818