SWDEV-318349 - Fix hipGraphKernelNode and hipGraphMemcpyNode

For hipGraphKernelNode, remove func_;
and reorganize functions to naturely support mGPU;
For hipGraphMemcpyNode, make EnqueueCommands() support different
queues' sync
Change-Id: I22708923f454adf4456ff99d25559daffed8c20d

hipamd/src/hip_graph_internal.cpp

@@ -817,6 +817,7 @@ hipError_t hipGraphExec::Run(hipStream_t stream) {
     endCommand->enqueue();
     endCommand->release();
   }
+  if (stream == nullptr)  queue->finish();
   ResetQueueIndex();
-  return hipSuccess;
+  return status;
 }