msm-camera: Add placeholders for 3A features in YUV sensor for 8x10.

Adding support for 3A feature in YUV sensor for 8x10. Features will
not be functional because we are just adding placeholders for now.

This change is required to send proper return value to upper
layers for not to exit due to errors.

Change-Id: I8c99881d50a3b2306d2b9c05844725c13c5e292b
Signed-off-by: Chandan Gera <cgera@codeaurora.org>