Add check_feature helper

Test: VtsAidlKeyMintTargetTest
Change-Id: I4a5b2a41172c15ae29efb5b177eb86cea5527b4e
Merged-In: I4a5b2a41172c15ae29efb5b177eb86cea5527b4e
(cherry picked from commit 3d2ba0a137debcbf48a4efdd2016fe132293b6bc)
diff --git a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.h b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.h
index 8f9df24..7d3bc30 100644
--- a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.h
+++ b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.h
@@ -386,6 +386,7 @@
 void check_maced_pubkey(const MacedPublicKey& macedPubKey, bool testMode,
                         vector<uint8_t>* payload_value);
 void p256_pub_key(const vector<uint8_t>& coseKeyData, EVP_PKEY_Ptr* signingKey);
+bool check_feature(const std::string& name);
 
 AuthorizationSet HwEnforcedAuthorizations(const vector<KeyCharacteristics>& key_characteristics);
 AuthorizationSet SwEnforcedAuthorizations(const vector<KeyCharacteristics>& key_characteristics);