[202412] [Mellanox] platform: Enable cache on init (sonic-net#1145)

202412 Cherry-pick PR for
sonic-net#22651

Signed-off-by: Jianyue Wu <jianyuew@nvidia.com>

Author: jianyuewu

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

@@ -23,6 +23,7 @@
 
 try:
     from sonic_platform_base.platform_base import PlatformBase
+    from sonic_platform_base.sonic_xcvr.api.public.cmis import CmisApi
     from .chassis import Chassis, ModularChassis
     from .device_data import DeviceDataManager
 except ImportError as e:
@@ -31,6 +32,7 @@
 class Platform(PlatformBase):
     def __init__(self):
         PlatformBase.__init__(self)
+        CmisApi.set_cache_enabled(True)
         if DeviceDataManager.get_linecard_count() == 0:
             self._chassis = Chassis()
         else: