kfdtest: Skip slow tests in MMBandWidth

Some VRAM access tests in MMBandWidth can be very slow on systems with
complicated PCIe topology. Skip tests that take a long time to avoid
excessively long running tests with little benefit.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Change-Id: I2950237347fc2f764f6aa3292ab819051472bf37


[ROCm/ROCR-Runtime commit: 3ecd54f098]

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

@@ -2031,6 +2031,10 @@ TEST_F(KFDMemoryTest, MMBandWidth) {
         RECORD(mcpWTime) << MMBANDWIDTH_KEY_PREFIX << "mcpWTime";
         RECORD(accessRTime) << MMBANDWIDTH_KEY_PREFIX << "accessRTime";
         RECORD(accessWTime) << MMBANDWIDTH_KEY_PREFIX << "accessWTime";
+
+        // skip slow tests
+        if (mcpRTime + mcpWTime + accessRTime + accessWTime > 5000000)
+            break;
     }
 
     munmap(tmp, tmpBufferSize);