sh-pfc: Split pins and functions into separate gpio_chip instances

Register two GPIO chips, one for the real GPIOs and one for the function
GPIOs.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
3 files changed