mx6sabreauto: Add DM_GPIO support

Add the DM_GPIO related config for mx6sabreauto.
Also add the gpio request calls.

Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
2 files changed