gpio-rcar: Add pinctrl support

Register the GPIO pin range, and request and free GPIO pins using the
pinctrl API.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
diff --git a/include/linux/platform_data/gpio-rcar.h b/include/linux/platform_data/gpio-rcar.h
index bebfcd8..b253f77 100644
--- a/include/linux/platform_data/gpio-rcar.h
+++ b/include/linux/platform_data/gpio-rcar.h
@@ -20,6 +20,7 @@
 	unsigned int gpio_base;
 	unsigned int irq_base;
 	unsigned int number_of_pins;
+	const char *pctl_name;
 };
 
 #endif /* __GPIO_RCAR_H__ */