pinctrl: Add i.MX7ULP pinctrl driver

Add i.MX7ULP pinctrl driver.
Select CONFIG_PINCTRL_IMX7ULP to use this driver.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by : Stefano Babic <sbabic@denx.de>
5 files changed