kfdtest: Add event-based synchronization mechanism to queues

Wait4PacketConsumption now can accept an event to wait all packets subbmitted
to be processed.

Change-Id: I1497b7704e892b04d05811b8d3e4742237c1be57
Signed-off-by: xinhui pan <xinhui.pan@amd.com>


[ROCm/ROCR-Runtime commit: 9c7cfc0df2]

projects/rocr-runtime/tests/kfdtest/src/BaseQueue.hpp

@@ -63,7 +63,7 @@ class BaseQueue {
     /** Wait for all the packets submitted to the queue to be consumed. (i.e. wait until RPTR=WPTR).
      *  Note that all packets being consumed is not the same as all packets being processed.
      */
-    virtual void Wait4PacketConsumption();
+    virtual void Wait4PacketConsumption(HsaEvent *event = NULL);
     /** @brief Place packet and submit it in one function
      */
     virtual void PlaceAndSubmitPacket(const BasePacket &packet);