msm: camera: Add effects for front camera.

Added Support for  Effects like saturtaion,contrast for YUV sensor
CRs-Fixed: 352316
Change-Id: If278755849a866e84069ce517b2f1f6c67294980
Signed-off-by: Katta Santhisindhu <kattas@codeaurora.org>
[davidb: only include/linux/videodev2.h]
Signed-off-by: David Brown <davidb@codeaurora.org>