msm: camera: Config I/O format for pixel interface.

For ISP pixel pipeline, the input image format
needs to be configured to the hardware in order
for the pipeline to interpret the input image
properly. This change add support to configure
the io register which is also used to configure
camif raw dump image format.

Change-Id: Ia52930d7c9597778b85abd9dc920d5d4ba62fdaa
Signed-off-by: Kevin Chan <ktchan@codeaurora.org>
Signed-off-by: Peter Liu <pingchie@codeaurora.org>