Migrate broadcast radio HAL from HIDL to AIDL

Radio HAL is migrated to AIDL by hidl2aidl tool, and the
following changes are applied:
- Result type is returned as service-specific error than normal
return value since AIDL only allows one return value of primitive
types.
- Integer data types were changed to int, long and byte.
- Constant enum was removed and replaced by constants defined in
IBroadcastRadio.
- Rds and Deemphasis enums were removed and defined as const in
AmFmRegionConfig
- MetadataKey was removed, and Metadata was defined as union.
- ITunerSession:scan() was renamed to ITunerSession:seek().
- ITunerSession was removed and its methods were added to
IBroadcastRadio.
- Callback for config flag setting was added to ITunerCallback.
- Callback and timeout behaviors are clarified.

Bug: 170336130
Test: m -j
Change-Id: Id1cdc5651037429ca07a4d4dc4682709cfc4949b
diff --git a/broadcastradio/aidl/Android.bp b/broadcastradio/aidl/Android.bp
new file mode 100644
index 0000000..41d637c
--- /dev/null
+++ b/broadcastradio/aidl/Android.bp
@@ -0,0 +1,31 @@
+//
+// Copyright (C) 2022 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.
+//
+
+aidl_interface {
+    name: "android.hardware.broadcastradio",
+    vendor_available: true,
+    srcs: ["android/hardware/broadcastradio/*.aidl"],
+    stability: "vintf",
+    backend: {
+        cpp: {
+            enabled: false,
+        },
+        java: {
+            sdk_version: "module_current",
+            min_sdk_version: "Tiramisu",
+        },
+    },
+}