kfdtest: Consolidate log messages for skipped tests

When skipping a test, the output should be:
Skipping test: <reason>.

This will allow for easier identification, automation and general readability

Change-Id: I98bda1c068f9dbc83aeea74f642b6101121f234d


[ROCm/ROCR-Runtime commit: f2bd7e1d52]

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

@@ -169,7 +169,7 @@ TEST_F(KFDDBGTest, BasicAddressWatch) {
         ASSERT_SUCCESS(queue.Destroy());
         ASSERT_SUCCESS(queue_flush.Destroy());
     } else {
-        LOG() << "Test is skipped for family ID 0x" << m_FamilyId << std::endl;
+        LOG() << "Skipping test: Test not supported on family ID 0x" << m_FamilyId << "." << std::endl;
     }
     TEST_END
 }