Configure unused Pads as NC and sort the pads according to the gpio community. Move the pad configurations from mainboard to gpio.h BUG=none TEST=Boot to OS and check all functionalities. Change-Id: I8e9eeebf5d75c71c521649c72612c06f3fa43701 Signed-off-by: Jagadish Krishnamoorthy <jagadish.krishnamoorthy@intel.com> Reviewed-on: https://review.coreboot.org/15327 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>