msm: camera: Configure the shared pinctrl properly

The dtsi node of some sensor sub devices don't have the pinctrl
configuration, the shared gpio's pinctrl control can't depends
on the sub device's pinctrl. Need always call the shared pinctrl
interface to control the shared pinctrl.

Change-Id: Ib24e4a5104599d2439e3a733366f8771c2727551
Signed-off-by: Depeng Shao <depengs@codeaurora.org>