pinctrl: Add Oxford Semiconductor OXNAS pinctrl and gpio driver

Add pinctrl and gpio control support to Oxford Semiconductor OXNAS SoC Family.
This version supports the ARM926EJ-S based OX810SE SoC with 34 IO pins.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/Kconfig

@@ -129,6 +129,17 @@ config PINCTRL_MESON
 	select OF_GPIO
 	select REGMAP_MMIO
 
+config PINCTRL_OXNAS
+	bool
+	depends on OF
+	select PINMUX
+	select PINCONF
+	select GENERIC_PINCONF
+	select GPIOLIB
+	select OF_GPIO
+	select GPIOLIB_IRQCHIP
+	select MFD_SYSCON
+
 config PINCTRL_ROCKCHIP
 	bool
 	select PINMUX

drivers/pinctrl/Makefile

@@ -17,6 +17,7 @@ obj-$(CONFIG_PINCTRL_AMD)	+= pinctrl-amd.o
 obj-$(CONFIG_PINCTRL_DIGICOLOR)	+= pinctrl-digicolor.o
 obj-$(CONFIG_PINCTRL_FALCON)	+= pinctrl-falcon.o
 obj-$(CONFIG_PINCTRL_MESON)	+= meson/
+obj-$(CONFIG_PINCTRL_OXNAS)	+= pinctrl-oxnas.o
 obj-$(CONFIG_PINCTRL_PALMAS)	+= pinctrl-palmas.o
 obj-$(CONFIG_PINCTRL_PIC32)	+= pinctrl-pic32.o
 obj-$(CONFIG_PINCTRL_PISTACHIO)	+= pinctrl-pistachio.o