SWDEV-298985 - hipMemPrefetchAsync should prefetch the data to the specified destination device

Pass the device agent specified by the user to the ROCr api instead of passing the device agent attached to the specified stream

Change-Id: I86c98935b9dc404eaa6d47ccdd082a8c3678fb36


[ROCm/clr commit: 169cc857fd]

projects/clr/rocclr/device/rocm/rocvirtual.cpp

@@ -1578,7 +1578,7 @@ void VirtualGPU::submitSvmPrefetchAsync(amd::SvmPrefetchAsyncCommand& cmd) {
     // Find the requested agent for the transfer
     hsa_agent_t agent = (cmd.cpu_access() ||
         (dev().settings().hmmFlags_ & Settings::Hmm::EnableSystemMemory)) ?
-        dev().getCpuAgent() : gpu_device();
+        dev().getCpuAgent() : (static_cast<const roc::Device*>(cmd.device()))->getBackendDevice();
 
     // Initiate a prefetch command
     hsa_status_t status = hsa_amd_svm_prefetch_async(