SWDEV-422544 - Use hipDeviceAttributeUnifiedAddressing as APU flag

Change-Id: If718a20f62f0ba8d83c01a0b2d16ff3f706f7bd4


[ROCm/clr commit: b825decd42]

projects/clr/hipamd/src/hip_device_runtime.cpp

@@ -422,7 +422,7 @@ hipError_t hipDeviceGetAttribute(int* pi, hipDeviceAttribute_t attr, int device)
       // HIP runtime always uses SVM for host memory allocations.
       // Note: Host registered memory isn't covered by this feature
       // and still requires hipMemHostGetDevicePointer() call
-      *pi = true;
+      *pi = g_devices[device]->devices()[0]->info().hostUnifiedMemory_;
       break;
     case hipDeviceAttributeCanUseStreamWaitValue:
       // hipStreamWaitValue64() and hipStreamWaitValue32() support