Add callback for AVRCP 1.6 support

Bug: 33828042
Test: Build
Change-Id: Iaf5cecfa38065cfeed096929952559d7cb2e248b
diff --git a/Android.mk b/Android.mk
index 109f610..8a9899b 100644
--- a/Android.mk
+++ b/Android.mk
@@ -441,6 +441,7 @@
 	media/java/android/media/projection/IMediaProjectionManager.aidl \
 	media/java/android/media/projection/IMediaProjectionWatcherCallback.aidl \
 	media/java/android/media/session/IActiveSessionsListener.aidl \
+	media/java/android/media/session/ICallback.aidl \
 	media/java/android/media/session/IOnMediaKeyListener.aidl \
 	media/java/android/media/session/IOnVolumeKeyLongPressListener.aidl \
 	media/java/android/media/session/ISession.aidl \