pinctrl: freescale: Add i.MXRT1050 pinctrl driver support

Add the pinctrl driver support for i.MXRT1050.

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/20211125211443.1150135-5-Mr.Bossman075@gmail.com


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>