Refactor biometric virtual HAL config/control

for additional ways besides system property
Bug: 326227403
Test: atest android.hardware.biometrics.common.ConfigTest

Change-Id: Id0aa4961cc732c23f5da140eca81470316834b70
diff --git a/biometrics/fingerprint/aidl/default/include/FingerprintConfig.h b/biometrics/fingerprint/aidl/default/include/FingerprintConfig.h
new file mode 100644
index 0000000..bd1ad4c
--- /dev/null
+++ b/biometrics/fingerprint/aidl/default/include/FingerprintConfig.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "config/Config.h"
+
+namespace aidl::android::hardware::biometrics::fingerprint {
+
+class FingerprintConfig : public Config {
+    Config::Data* getConfigData(int* size) override;
+};
+
+}  // namespace aidl::android::hardware::biometrics::fingerprint