Suppress gtest error for tests without any instance

Bug: 162052785
Test: m -j vts
Change-Id: I8c1a48e6fbd7c8161137902b5332911fa0d7b8b3
diff --git a/keymaster/4.0/vts/functional/KeymasterHidlTest.h b/keymaster/4.0/vts/functional/KeymasterHidlTest.h
index f495516..2ca7ea7 100644
--- a/keymaster/4.0/vts/functional/KeymasterHidlTest.h
+++ b/keymaster/4.0/vts/functional/KeymasterHidlTest.h
@@ -234,6 +234,7 @@
 };
 
 #define INSTANTIATE_KEYMASTER_HIDL_TEST(name)                                      \
+    GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(name);                           \
     INSTANTIATE_TEST_SUITE_P(PerInstance, name,                                    \
                              testing::ValuesIn(KeymasterHidlTest::build_params()), \
                              android::hardware::PrintInstanceNameToString)