Fixed log handling and exceptions

Updated exceptions
	Added driver load exception
	Fixed logging override by removing previous log handlers
	Updated debug output to use gpu_id vs C-pointer
	Removed AmdSmiRetcode class in favor of using the wrapper
directly
	Added traceback limits for clean errors (Not in debug)

Change-Id: Ia02bb842b8f60d9ab4b68b7f8b1afda30b1c021c
Signed-off-by: Maisam Arif <maisarif@amd.com>

py-interface/README.md

@@ -60,7 +60,7 @@ try:
         print("No GPUs on machine")
 except AmdSmiException as e:
     print("Error code: {}".format(e.err_code))
-    if e.err_code == AmdSmiRetCode.STATUS_RETRY:
+    if e.err_code == amdsmi_wrapper.AMDSMI_STATUS_RETRY:
         print("Error info: {}".format(e.err_info))
 ```