msm: camera: util: Add support for GPIOs, Pinctrl, Regulators

Added support for GPIOs, Pinctrl, and regulators control needed
by Sensor sub-modules.

Change-Id: I59fbdcc0b3a133db68c8cc165d778dc68376e3e1
Signed-off-by: Alok Pandey <akumarpa@codeaurora.org>
Signed-off-by: Pavan Kumar Chilamkurthi <pchilamk@codeaurora.org>