msm:camera: pin control changes cleanup for 8916

8916 uses pinctrl api to configure gpios.
Add pinctrl support to enable camera cci/sensor GPIOS.
Cleanup above code changes.

Change-Id: I6d7d814dbaa7a678cf7f99ea3a0d622552d23163
Signed-off-by: Vivek Veenam <vveenam@codeaurora.org>