Suppress gtest error for tests without any instance

Bug: 162052785
Test: m -j vts
Change-Id: I8c1a48e6fbd7c8161137902b5332911fa0d7b8b3
diff --git a/memtrack/1.0/vts/functional/VtsHalMemtrackV1_0TargetTest.cpp b/memtrack/1.0/vts/functional/VtsHalMemtrackV1_0TargetTest.cpp
index cccedca..26edd11 100644
--- a/memtrack/1.0/vts/functional/VtsHalMemtrackV1_0TargetTest.cpp
+++ b/memtrack/1.0/vts/functional/VtsHalMemtrackV1_0TargetTest.cpp
@@ -160,6 +160,7 @@
                   static_cast<uint32_t>(MemtrackType::NUM_TYPES));
 }
 
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(MemtrackHidlTest);
 INSTANTIATE_TEST_SUITE_P(
         PerInstance, MemtrackHidlTest,
         testing::ValuesIn(android::hardware::getAllHalInstanceNames(IMemtrack::descriptor)),