Sync up HSA_ENGINE_ID type with Windows/Perforce

HSA_ENGINE_ID in Perforce added ui32 to the typedef while in Git it doesn't.
This causes conflicts to RT applications. Decision being made is to change Git
to match Perforce.

Change-Id: I7e9c6437b023bb23ec9578737f8534e9453589b9

include/hsakmttypes.h

@@ -157,7 +157,7 @@ typedef union
         unsigned int Major    :  6;  // GFXIP Major engine version
         unsigned int Minor    :  8;  // GFXIP Minor engine version
         unsigned int Stepping :  8;  // GFXIP Stepping info
-    };
+    }ui32;
 } HSA_ENGINE_ID;
 
 typedef union