Allow KeyMint tests to pass on devices w/out KeyMint

Bug: 181987225
Test: VtsAidlKeyMintTargetTest
Change-Id: I243fee463611ec2bf1f3661c46d3431280e187aa
diff --git a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.h b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.h
index 86bc9c4..4d97ea9 100644
--- a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.h
+++ b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.h
@@ -284,7 +284,8 @@
 #define INSTANTIATE_KEYMINT_AIDL_TEST(name)                                          \
     INSTANTIATE_TEST_SUITE_P(PerInstance, name,                                      \
                              testing::ValuesIn(KeyMintAidlTestBase::build_params()), \
-                             ::android::PrintInstanceNameToString)
+                             ::android::PrintInstanceNameToString);                  \
+    GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(name);
 
 }  // namespace test