camera: add pix fmt Y10 to support RDI for mono sensor

 - V4L2_PIX_FMT_Y10 is a format for mono sensor. Add this format in isp
   axi driver to support RDI(RAW data interface) output for mono sensor
   of 10 bits per pix.

Change-Id: Id602731349ff41330a2aaa587c46279707004856
Signed-off-by: Zhaohong Chen <zhaohong@codeaurora.org>
Signed-off-by: Mounika Reddy Tangirala <mtangi@codeaurora.org>