[SWDEV-508173] [AMDSMI] Python API missing function errors (#46)

* [SWDEV-508173] Updates include:
- Updating py-interface to import amdsmi_get_gpu_reg_table_info and amdsmi_get_gpu_pm_metrics_info.
- Updating the ctypes from byref to pointer.

Signed-off-by: Castillo, Juan <Juan.Castillo@amd.com>

py-interface/amdsmi_interface.py

@@ -1778,12 +1778,12 @@ def amdsmi_get_gpu_pm_metrics_info(
             processor_handle, amdsmi_wrapper.amdsmi_processor_handle
         )
 
-    pm_metrics = ctypes.POINTER(amdsmi_wrapper.amdsmi_name_value_t)
-    num_mets = ctypes.c_uint32
+    pm_metrics = ctypes.POINTER(amdsmi_wrapper.amdsmi_name_value_t)()
+    num_mets = ctypes.c_uint32()
 
     _check_res(
         amdsmi_wrapper.amdsmi_get_gpu_pm_metrics_info(
-            processor_handle, ctypes.byref(pm_metrics), ctypes.byref(num_mets)
+            processor_handle, ctypes.pointer(pm_metrics), ctypes.byref(num_mets)
         )
     )
 
@@ -1807,12 +1807,12 @@ def amdsmi_get_gpu_reg_table_info(
             processor_handle, amdsmi_wrapper.amdsmi_processor_handle
         )
 
-    reg_metrics = ctypes.POINTER(amdsmi_wrapper.amdsmi_name_value_t)
-    num_regs = ctypes.c_uint32
+    reg_metrics = ctypes.POINTER(amdsmi_wrapper.amdsmi_name_value_t)()
+    num_regs = ctypes.c_uint32()
 
     _check_res(
         amdsmi_wrapper.amdsmi_get_gpu_reg_table_info(
-            processor_handle, reg_type, ctypes.byref(reg_metrics), ctypes.byref(num_regs)
+            processor_handle, reg_type, ctypes.pointer(reg_metrics), ctypes.byref(num_regs)
         )
     )