In order to be aware of all changes related to at91 pinctrl drivers,
merge the two entries. Make use of the opportunity to replace Atmel by
Microchip.
Signed-off-by: NLudovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>