DO NOT MERGE: CameraService: Fix permissions check issues

Bug: 15677063
Change-Id: I012c111fff90fefd9eb0fef7c9d6034f00c9c6df
camera: allow device to append camera parameters

Overload using include/camera/CameraParametersExtra.h in device
tree to add device specific camera parameters.

Change-Id: Ie79380f4e49661348df4b2028ddf48daa67fca2d
av: Various fixes and cleanups

Change-Id: I82225d8cd3e2b3015e6c0e1dd9ddc5ec8abab525