SWDEV-518831 - fix streams' sync issue in mthreads (#123)

* SWDEV-518831 - fix streams' sync issue in mthreads

1. Fix sync issue of null stream and non-null streams in
multithreads.
2. Remove assert(GetSubmissionBatch() == nullptr) as it
is invalid in multithreads.
3. Update getActiveQueues() to deal with the state of 
being terminated.

[ROCm/clr commit: 27aad09bd4]

projects/clr/hipamd/src/hip_device.cpp

@@ -201,6 +201,7 @@ void Device::WaitActiveStreams(hip::Stream* blocking_stream, bool wait_null_stre
         // Get the last valid command
         waitForStream(active_stream);
       }
+      command->release();
     }
   }