Suppress gtest error for tests without any instance

Bug: 162052785
Test: m -j vts
Change-Id: I8c1a48e6fbd7c8161137902b5332911fa0d7b8b3
diff --git a/keymaster/4.1/vts/functional/Keymaster4_1HidlTest.h b/keymaster/4.1/vts/functional/Keymaster4_1HidlTest.h
index 6332c43..5b3e918 100644
--- a/keymaster/4.1/vts/functional/Keymaster4_1HidlTest.h
+++ b/keymaster/4.1/vts/functional/Keymaster4_1HidlTest.h
@@ -151,6 +151,7 @@
 }
 
 #define INSTANTIATE_KEYMASTER_4_1_HIDL_TEST(name)                                     \
+    GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(name);                              \
     INSTANTIATE_TEST_SUITE_P(PerInstance, name,                                       \
                              testing::ValuesIn(Keymaster4_1HidlTest::build_params()), \
                              android::hardware::PrintInstanceNameToString)