pinctrl: sunxi: Add A23 PIO controller support

The A23 uses the same pin controller as previous SoC's from Allwinner.
Add support for the pins controlled by the main PIO controller.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Documentation/devicetree/bindings/pinctrl/allwinner,sunxi-pinctrl.txt

@@ -13,6 +13,7 @@ Required properties:
   "allwinner,sun6i-a31-pinctrl"
   "allwinner,sun6i-a31-r-pinctrl"
   "allwinner,sun7i-a20-pinctrl"
+  "allwinner,sun8i-a23-pinctrl"
 - reg: Should contain the register physical address and length for the
   pin controller.
 

drivers/pinctrl/sunxi/Kconfig

@@ -30,4 +30,8 @@ config PINCTRL_SUN7I_A20
 	def_bool MACH_SUN7I
 	select PINCTRL_SUNXI_COMMON
 
+config PINCTRL_SUN8I_A23
+	def_bool MACH_SUN8I
+	select PINCTRL_SUNXI_COMMON
+
 endif

drivers/pinctrl/sunxi/Makefile

@@ -8,3 +8,4 @@ obj-$(CONFIG_PINCTRL_SUN5I_A13)		+= pinctrl-sun5i-a13.o
 obj-$(CONFIG_PINCTRL_SUN6I_A31)		+= pinctrl-sun6i-a31.o
 obj-$(CONFIG_PINCTRL_SUN6I_A31_R)	+= pinctrl-sun6i-a31-r.o
 obj-$(CONFIG_PINCTRL_SUN7I_A20)		+= pinctrl-sun7i-a20.o
+obj-$(CONFIG_PINCTRL_SUN8I_A23)		+= pinctrl-sun8i-a23.o