pinctrl: sunxi: Introduce per-driver Kconfig options

Add one Kconfig option for each driver. This will allow to better control which
driver is enabled, instead of having either all or nothing.
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>

drivers/pinctrl/sunxi/Kconfig

@@ -5,4 +5,28 @@ config PINCTRL_SUNXI
 	select PINMUX
 	select GENERIC_PINCONF
 
+config PINCTRL_SUN4I_A10
+       bool
+       select PINCTRL_SUNXI
+
+config PINCTRL_SUN5I_A10S
+       bool
+       select PINCTRL_SUNXI
+
+config PINCTRL_SUN5I_A13
+       bool
+       select PINCTRL_SUNXI
+
+config PINCTRL_SUN6I_A31
+       bool
+       select PINCTRL_SUNXI
+
+config PINCTRL_SUN6I_A31_R
+       bool
+       select PINCTRL_SUNXI
+
+config PINCTRL_SUN7I_A20
+       bool
+       select PINCTRL_SUNXI
+
 endif

drivers/pinctrl/sunxi/Makefile

@@ -2,9 +2,9 @@
 obj-$(CONFIG_PINCTRL_SUNXI)	+= pinctrl-sunxi.o
 
 # SoC Drivers
-obj-$(CONFIG_PINCTRL_SUNXI)	+= pinctrl-sun4i-a10.o
-obj-$(CONFIG_PINCTRL_SUNXI)	+= pinctrl-sun5i-a10s.o
-obj-$(CONFIG_PINCTRL_SUNXI)	+= pinctrl-sun5i-a13.o
-obj-$(CONFIG_PINCTRL_SUNXI)	+= pinctrl-sun6i-a31.o
-obj-$(CONFIG_PINCTRL_SUNXI)	+= pinctrl-sun6i-a31-r.o
-obj-$(CONFIG_PINCTRL_SUNXI)	+= pinctrl-sun7i-a20.o
+obj-$(CONFIG_PINCTRL_SUN4I_A10)		+= pinctrl-sun4i-a10.o
+obj-$(CONFIG_PINCTRL_SUN5I_A10S)	+= pinctrl-sun5i-a10s.o
+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