t0: Enable ZSL for camera

 * Needs HAL tuning, but improves shot-to-shot peformance as the
   preview does not need stopped.

Change-Id: I10071efa30404fd121550d9226df0bd9ca354c12
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_device_samsung_t0lte into cd-4.4