driver: pinctrl: Add reserved GPIOs for Lahaina

Certain GPIOs are reserved for secure world and cannot be accessed by HLOS. 
Supply "reserved_gpios" to msm_pinctrl to mark these pins as invalid.

Change-Id: I896b1cc02221873341cb79db63fd61db155f5590
Signed-off-by: Elliot Berman <eberman@codeaurora.org>