kfdtest: Consolidate logic for ASSERT vs EXPECT

ASSERT failures result in immediate termination of the test. EXPECT
returns a failure but continues execution. Reserve ASSERT for required
functionality (node initialization, queue creation, etc) where the rest
of the test cannot run if that call fails. Use EXPECT everywhere else

Change-Id: I1c11326fc3ae22b50fa83b07b3b49af1e1f4e69e


[ROCm/ROCR-Runtime commit: fe33461622]

projects/rocr-runtime/tests/kfdtest/src/PM4Packet.cpp

@@ -254,7 +254,7 @@ void PM4SetShaderRegPacket::InitPacket(unsigned int baseOffset, const unsigned i
      */
     m_pPacketData = reinterpret_cast<PM4SET_SH_REG *>(malloc(m_packetSize));
 
-    ASSERT_NOTNULL(m_pPacketData);
+    EXPECT_NOTNULL(m_pPacketData);
 
     m_packetDataAllocated = true;