There are currently many places that define the list of all Tegra GPIOs;
the DT binding header and custom Tegra-specific header file gpio.h. Fix
the redundancy by replacing everything with the DT binding header file.
Signed-off-by: Stephen Warren <email@example.com>
Reviewed-by: Simon Glass <firstname.lastname@example.org>
Signed-off-by: Tom Warren <email@example.com>