kfdtest: increase KFDPerformanceTest.P2PBandWidthTest timeout value

KFDPerformanceTest.P2PBandWidthTest[push, push] takes about 3 seconds
on 4 gfx906, the default g_TestTimeout 2 seconds is not enough to wait
for sDMA queue rptr is consumed. Use kfdtest command line option
--timeout=6000, the test is finished and result is reasonable twice as
P2PBandWidthTest[push, none]. Change P2PBandWidthTest wait timeout to 6
seconds.

Add timeout argument to function WaitOnValue, BaseQueue.Wait4PacketConsumption
SDMAQueue.Wait4PacketConsumption, PM4Queue.Wait4PacketConsumption with
default value is g_TestTimeOut.

Change-Id: I0aa04d644339feaeea695e41647ae66568beab9e
Signed-off-by: Philip Yang <Philip.Yang@amd.com>

tests/kfdtest/src/PM4Queue.hpp

@@ -48,7 +48,7 @@ class PM4Queue : public BaseQueue {
      *  1) Less CPU usage (process can sleep, waiting for interrupt).
      *  2) Lower latency (GPU only updates RPTR in memory periodically).
      */
-    virtual void Wait4PacketConsumption(HsaEvent *event = NULL);
+    virtual void Wait4PacketConsumption(HsaEvent *event = NULL, unsigned int timeOut = g_TestTimeOut);
 
  protected:
     virtual PACKETTYPE PacketTypeSupported() { return PACKETTYPE_PM4; }