camera: Make some binder interfaces compatible with AIDL

Done:
* ICameraService
* ICameraServiceListener

Partial:
* ICamera (disconnect only)
* IProCameraUser (disconnect only)

Bug: 9213377
Change-Id: I8e2e6e05cfd02ec36be1d5b2c551f10ffb43b5b4
diff --git a/include/camera/ICameraClient.h b/include/camera/ICameraClient.h
index b30aa7a..1584dba 100644
--- a/include/camera/ICameraClient.h
+++ b/include/camera/ICameraClient.h
@@ -28,6 +28,9 @@
 
 class ICameraClient: public IInterface
 {
+    /**
+     * Keep up-to-date with ICameraClient.aidl in frameworks/base
+     */
 public:
     DECLARE_META_INTERFACE(CameraClient);