ASIC serial updates

Corrected asic serial fallback to use rsmi's unique id
	Removed product serial due to duplication

Change-Id: Ib4e9ac00d2bf31ccbc35060bc84f7e79e5332d37
Signed-off-by: Maisam Arif <maisarif@amd.com>

include/amd_smi/amdsmi.h

@@ -392,7 +392,7 @@ typedef struct {
   char  market_name[AMDSMI_MAX_STRING_LENGTH];
   uint32_t vendor_id;   //< Use 32 bit to be compatible with other platform.
   uint32_t subvendor_id;   //< The subsystem vendor id
-  uint64_t device_id;   //< The unique id of a GPU
+  uint64_t device_id;   //< The device id of a GPU
   uint32_t rev_id;
   char asic_serial[AMDSMI_NORMAL_STRING_LENGTH];
   uint32_t reserved[3];