[Mellanox] enlarge the eeprom ready timeout from 20 to 60 (sonic-net#…

…18983)

- Why I did it
Service like ZTP accesses EEPROM very early at the boot stage. It could cause an issue that EEPROM is not ready. The PR enlarge EEPROM ready timeout from 20s to 60s.

- How I did it
Enlarge EEPROM ready timeout from 20s to 60s.

- How to verify it
Manual test

platform/mellanox/mlnx-platform-api/sonic_platform/eeprom.py

@@ -51,7 +51,7 @@
             os.makedirs(os.path.dirname(EEPROM_SYMLINK))
         subprocess.check_call(['/usr/bin/xxd', '-r', '-p', 'syseeprom.hex', EEPROM_SYMLINK], cwd=platform_path)
 
-WAIT_EEPROM_READY_SEC = 20
+WAIT_EEPROM_READY_SEC = 60
 
 
 class Eeprom(eeprom_tlvinfo.TlvInfoDecoder):