pinctrl: UniPhier: add UniPhier ProXstream2 pinctrl driver

Add pin configuration and pinmux support for UniPhier ProXstream2
SoC.

Changes in v2:
  - sort groups and funcs alphabetically
  - add i2c pin-mux settings
  - sort members of platform_driver
  - change to tristate
  - add THIS_MODULE to pinctrl_desc
  - use module_platform_driver
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/uniphier/Kconfig

@@ -21,4 +21,8 @@ config PINCTRL_UNIPHIER_PH1_PRO5
 	tristate "UniPhier PH1-Pro5 SoC pinctrl driver"
 	select PINCTRL_UNIPHIER_CORE
 
+config PINCTRL_UNIPHIER_PROXSTREAM2
+	tristate "UniPhier ProXstream2 SoC pinctrl driver"
+	select PINCTRL_UNIPHIER_CORE
+
 endif

drivers/pinctrl/uniphier/Makefile

@@ -4,3 +4,4 @@ obj-$(CONFIG_PINCTRL_UNIPHIER_PH1_LD4)		+= pinctrl-ph1-ld4.o
 obj-$(CONFIG_PINCTRL_UNIPHIER_PH1_PRO4)		+= pinctrl-ph1-pro4.o
 obj-$(CONFIG_PINCTRL_UNIPHIER_PH1_SLD8)		+= pinctrl-ph1-sld8.o
 obj-$(CONFIG_PINCTRL_UNIPHIER_PH1_PRO5)		+= pinctrl-ph1-pro5.o
+obj-$(CONFIG_PINCTRL_UNIPHIER_PROXSTREAM2)	+= pinctrl-proxstream2.o