CameraClient: re-add a bit of qcom magic to fix camcorder on jf

Change-Id: I3832d67e94a6cc85936269a37f54bbc442e7f347
camera: Re-add micromanagement of preview metadata

 * Some devices still have issues without this fix.

Change-Id: Iae2d4410086fb38bf7f9abeee62c05cae824d436
Merge branch 'cm-10.2' of github.com:CyanogenMod/android_frameworks_av into cm-10.2