Camera: Switch camera2 to auto-gen C++ binder interfaces

 - Move camera service AIDL files to frameworks/av
 - Build C++ interface stubs with AIDL tools
 - Add necessary native-side parcelables and update existing ones
 - Remove manually-written stubs, rearrange remaining manual stubs
 - Adjust implementations to work with auto-generated stubs
   - Adjust method signatures for auto-gen differences
   - Add rich error messages using binder::Status

Bug: 25091611
Change-Id: I6f69f34b9d1a3f8d1fb7db87357363f8fa8483ff
diff --git a/camera/CameraMetadata.cpp b/camera/CameraMetadata.cpp
index 46bcc1d..fad57ba 100644
--- a/camera/CameraMetadata.cpp
+++ b/camera/CameraMetadata.cpp
@@ -621,7 +621,7 @@
     return res;
 }
 
-status_t CameraMetadata::readFromParcel(Parcel *parcel) {
+status_t CameraMetadata::readFromParcel(const Parcel *parcel) {
 
     ALOGV("%s: parcel = %p", __FUNCTION__, parcel);