[SWDEV-539078] Add missing API definitions to python interface (#525)

Added the following API's to amdsmi_interface.py.
	amdsmi_get_cpu_handle()
	amdsmi_get_esmi_err_msg()
	amdsmi_get_gpu_event_notification()
	amdsmi_get_processor_count_from_handles()
	amdsmi_get_processor_handles_by_type()
	amdsmi_gpu_validate_ras_eeprom()
	amdsmi_init_gpu_event_notification()
	amdsmi_set_gpu_event_notification_mask()
	amdsmi_stop_gpu_event_notification()
	amdsmi_get_gpu_busy_percent()

Added additional return value to API amdsmi_get_xgmi_plpd().
	The entry policies is added to the end of the dictionary to match API definition.
	The entry plpds is marked for deprecation as it has the same information as policies.

---------

Signed-off-by: josnarlo <Joseph.Narlo@amd.com>
Signed-off-by: Maisam Arif <Maisam.Arif@amd.com>

docs/reference/amdsmi-py-api.md

@@ -3325,7 +3325,7 @@ Field | Description
 ---|---
 `num_supported` | The number of supported policies
 `current_id` | The current policy index
-`plpds` | List of policies.
+`policies` | List of policies. (`plpds` marked for deprecation in next major release)
 
 Exceptions that can be thrown by `amdsmi_get_xgmi_plpd` function: