Adding AIDL version 2 of AudioControl HAL

- Updated APIs to use PlaybackTrackMetadata (aka AudioAttributes)
instead of usage to get rid of usages list limitation.

- Add Gain Callback to notify unexpected gain changed from HAL
(as currently done for Audio Focus).

- Aggregate Callbacks within a unique IAudioControlCallback interface

Bug: b/218682011
Test: build

Signed-off-by: Francois Gaffie <francois.gaffie@renault.com>
Change-Id: If74d575fad3888b698250a8ec9a6918f7cb294d7
diff --git a/automotive/audiocontrol/aidl/Android.bp b/automotive/audiocontrol/aidl/Android.bp
index 5e69429..890d7a0 100644
--- a/automotive/audiocontrol/aidl/Android.bp
+++ b/automotive/audiocontrol/aidl/Android.bp
@@ -13,6 +13,10 @@
     name: "android.hardware.automotive.audiocontrol",
     vendor_available: true,
     srcs: ["android/hardware/automotive/audiocontrol/*.aidl"],
+    imports: [
+        "android.hardware.audio.common",
+        "android.media.audio.common.types",
+    ],
     stability: "vintf",
     backend: {
         java: {
@@ -24,5 +28,7 @@
             ],
         },
     },
-    versions: ["1"],
+    versions: [
+        "1",
+    ],
 }