CameraWrapper: Fix compilation warnings

Change-Id: Ic5473d820af90534881f83e6ed0f4603513647ab
CameraWrapper: Logging adjustments

Change-Id: I5ede4e9453c56dcc915820e9c9d9aae35a87c278
CameraWrapper: HDR with ZSL: start preview after jpeg callback

Change-Id: I71f21d6fe702de0d7cfb2aab8f8e40bd8df077ae
CameraWrapper: Make sure that thumbnail size is set

Change-Id: Ia3a654f8052020bb70284c5bd46d157c943db723