kfdtest: Add a result check in CreateCpQueue test

With the orginal code, CreateCpQueue will report failure if
WaitOnValue return false. Add EXPECT_TRUE() so that in that case
the failure is reported.

Change-Id: I043d013958b452d7ccb9538dc296d99d024abf01
Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>

tests/kfdtest/src/KFDQMTest.cpp

@@ -73,7 +73,7 @@ TEST_F(KFDQMTest, CreateCpQueue) {
 
     queue.Wait4PacketConsumption();
 
-    WaitOnValue(destBuf.As<unsigned int*>(), 0);
+    EXPECT_TRUE(WaitOnValue(destBuf.As<unsigned int*>(), 0));
 
     EXPECT_SUCCESS(queue.Destroy());