pinctrl: sunxi: add support for the Allwinner H6 main pin controller

The Allwinner H6 SoC has two pin controllers, one main controller
(called CPUX-PORT in user manual) and one controller in CPUs power
domain (called CPUS-PORT in user manual).

This commit introduces support for the main pin controller on H6.

The pin bank A and B are not wired out and hidden from the SoC's
documents, however it's shown that the "ATE" (an AC200 chip
co-packaged with the H6 die) is connected to the main SoC die via these
pin banks. The information about these banks is just copied from the BSP
pinctrl driver, but re-formatted to fit the mainline pinctrl driver
format. The GPIO functions are dropped, as they're impossible to use --
except a GPIO&IRQ only pin (PB20) which might be the IRQ of ATE.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

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

@@ -27,6 +27,7 @@ Required properties:
   "allwinner,sun50i-a64-pinctrl"
   "allwinner,sun50i-a64-r-pinctrl"
   "allwinner,sun50i-h5-pinctrl"
+  "allwinner,sun50i-h6-pinctrl"
   "nextthing,gr8-pinctrl"
 
 - reg: Should contain the register physical address and length for the

drivers/pinctrl/sunxi/Kconfig

@@ -77,4 +77,8 @@ config PINCTRL_SUN50I_H5
 	def_bool ARM64 && ARCH_SUNXI
 	select PINCTRL_SUNXI
 
+config PINCTRL_SUN50I_H6
+	def_bool ARM64 && ARCH_SUNXI
+	select PINCTRL_SUNXI
+
 endif

drivers/pinctrl/sunxi/Makefile

@@ -18,5 +18,6 @@ obj-$(CONFIG_PINCTRL_SUN8I_H3)		+= pinctrl-sun8i-h3.o
 obj-$(CONFIG_PINCTRL_SUN8I_H3_R)	+= pinctrl-sun8i-h3-r.o
 obj-$(CONFIG_PINCTRL_SUN8I_V3S)		+= pinctrl-sun8i-v3s.o
 obj-$(CONFIG_PINCTRL_SUN50I_H5)		+= pinctrl-sun50i-h5.o
+obj-$(CONFIG_PINCTRL_SUN50I_H6)		+= pinctrl-sun50i-h6.o
 obj-$(CONFIG_PINCTRL_SUN9I_A80)		+= pinctrl-sun9i-a80.o
 obj-$(CONFIG_PINCTRL_SUN9I_A80_R)	+= pinctrl-sun9i-a80-r.o