camera: Add AIDL interface for CameraServiceProxy.

- Adds an AIDL interface to allow the proxy camera service
  running in system server to accept RPCs from the camera
  service running in mediaserver.
- Request an update to the valid user set from the proxy
  camera service when mediaserver restarts to initialize
  properly + avoid DOS after a crash.

Bug: 21267484
Change-Id: Ib821582794ddd1e3574b5dc6c79f7cb197b57f10
diff --git a/Android.mk b/Android.mk
index eb6e7b5..a6ae613 100644
--- a/Android.mk
+++ b/Android.mk
@@ -145,6 +145,7 @@
 	core/java/android/database/IContentObserver.aidl \
 	core/java/android/hardware/ICameraService.aidl \
 	core/java/android/hardware/ICameraServiceListener.aidl \
+	core/java/android/hardware/ICameraServiceProxy.aidl \
 	core/java/android/hardware/ICamera.aidl \
 	core/java/android/hardware/ICameraClient.aidl \
 	core/java/android/hardware/IConsumerIrService.aidl \