Suppress gtest error for tests without any instance

Bug: 162052785
Test: m -j vts
Change-Id: I58bc808a82b2128bb8774f762f9b9fcecd2614fb
diff --git a/gnss/2.1/vts/functional/VtsHalGnssV2_1TargetTest.cpp b/gnss/2.1/vts/functional/VtsHalGnssV2_1TargetTest.cpp
index e61d885..89a9781 100644
--- a/gnss/2.1/vts/functional/VtsHalGnssV2_1TargetTest.cpp
+++ b/gnss/2.1/vts/functional/VtsHalGnssV2_1TargetTest.cpp
@@ -23,6 +23,7 @@
 
 using android::hardware::gnss::V2_1::IGnss;
 
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(GnssHalTest);
 INSTANTIATE_TEST_SUITE_P(
         PerInstance, GnssHalTest,
         testing::ValuesIn(android::hardware::getAllHalInstanceNames(IGnss::descriptor)),