Define new AudioControl HAL for automotive.

This provides a mechanism for Android to interact with a car's
audio subsystem.
It is a partial replacement for the deprecated AUDIO_* properties in VehicleHal.
It also provides control over fade/balance.

Bug: 31623564
Test: build for bat_land.  VTS tests in future CL.
Change-Id: I4344cce3a6aa9a28d1327bf4d16bd080c7fd3f50
diff --git a/automotive/audiocontrol/1.0/Android.bp b/automotive/audiocontrol/1.0/Android.bp
new file mode 100644
index 0000000..a967049
--- /dev/null
+++ b/automotive/audiocontrol/1.0/Android.bp
@@ -0,0 +1,23 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.automotive.audiocontrol@1.0",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "IAudioControl.hal",
+        "IAudioControlCallback.hal",
+    ],
+    interfaces: [
+        "android.hidl.base@1.0",
+    ],
+    types: [
+        "AudioResult",
+        "ContextNumber",
+    ],
+    gen_java: true,
+}
+