msm: camera: sensor: seperating sensor configuration commands

The initconfig is coulped with all the settings and not
having flexibility to configure at appropriate time.
split the commands into init/res/off/on and configure at
appropriate time.

Change-Id: I5ee386c0fb42c029d8949e99763a65cfcd2ad06d
Signed-off-by: Soundrapandian Jeyaprakash <jsoundra@codeaurora.org>