libhsakmt: Expose device Unique Id

Read device unique id from sysfs and expose it in HsaNodeProperties.
For devices not supported the value will be 0

Signed-off-by: Divya Shikre <DivyaUday.Shikre@amd.com>
Change-Id: I97b8689dfa090971c6876de6feaa97652e28c03d

include/hsakmttypes.h

@@ -308,7 +308,8 @@ typedef struct _HsaNodeProperties
     HSAuint8        Reserved2;
 
     HSAuint32       Domain;            // PCI domain of the GPU
-    HSAuint8        Reserved[28];
+    HSAuint64       UniqueID;          // Globally unique immutable id
+    HSAuint8        Reserved[20];
 } HsaNodeProperties;