d2: msm-camera: Add support for YV12 preview format

Enable camera driver to output preview frames in YV12 format.

CRs-fixed: 344048
Signed-off-by: Alekhya,Monika <malekh@codeaurora.org>
(cherry picked from commit fc81e10421b055303c2459fd52e19a57e2aff31e)

Signed-off-by: Srivalli Oguri <oguri@codeaurora.org>