kfdtest: Restrict DriverHDPFlush to systems with PCIe

Nodes with XGMI have no HDP, so DriverHDPFlush should skip.

Signed-off-by: David Francis <David.Francis@amd.com>
Change-Id: If5a87e660712e51d03e750d8e044786036b2e603


[ROCm/ROCR-Runtime commit: e32278a612]

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

@@ -1919,6 +1919,11 @@ TEST_F(KFDMemoryTest, DeviceHdpFlush) {
         return;
     }
 
+    if (m_NodeInfo.IsNodeXGMItoCPU(nodes[0])) {
+        LOG() << "Skipping test: PCIe link to CPU is required." << std::endl;
+        return;
+    }
+
     HsaMemoryProperties *memoryProperties = new HsaMemoryProperties[pNodeProperties->NumMemoryBanks];
     EXPECT_SUCCESS(hsaKmtGetNodeMemoryProperties(nodes[0], pNodeProperties->NumMemoryBanks,
                    memoryProperties));