SWDEV-438503 - Always report hipDeviceAttributeUnifiedAddressing as true.

Change-Id: I3119bd8f99c079280bde1ba32b3d26b474899e7d

hipamd/src/hip_device_runtime.cpp

@@ -418,7 +418,7 @@ 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 = g_devices[device]->devices()[0]->info().hostUnifiedMemory_;
+      *pi = true;
       break;
     case hipDeviceAttributeCanUseStreamWaitValue:
       // hipStreamWaitValue64() and hipStreamWaitValue32() support