pinctrl: add a Gemini SoC pin controller

This adds a pin control (only multiplexing) driver for the Gemini
SoC so we can sort out this complex platform in an orderly manner.

This driver will detect the chip/package version as SL3512 or SL3516
(also known as CS3512 and CS3516 etc) and register the apropriate
pin set.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/Kconfig

@@ -146,6 +146,13 @@ config PINCTRL_FALCON
 	depends on SOC_FALCON
 	depends on PINCTRL_LANTIQ
 
+config PINCTRL_GEMINI
+	bool
+	depends on ARCH_GEMINI
+	default ARCH_GEMINI
+	select PINMUX
+	select MFD_SYSCON
+
 config PINCTRL_MCP23S08
 	tristate "Microchip MCP23xxx I/O expander"
 	depends on SPI_MASTER || I2C

drivers/pinctrl/Makefile

@@ -18,6 +18,7 @@ obj-$(CONFIG_PINCTRL_AMD)	+= pinctrl-amd.o
 obj-$(CONFIG_PINCTRL_DA850_PUPD) += pinctrl-da850-pupd.o
 obj-$(CONFIG_PINCTRL_DIGICOLOR)	+= pinctrl-digicolor.o
 obj-$(CONFIG_PINCTRL_FALCON)	+= pinctrl-falcon.o
+obj-$(CONFIG_PINCTRL_GEMINI)	+= pinctrl-gemini.o
 obj-$(CONFIG_PINCTRL_MAX77620)	+= pinctrl-max77620.o
 obj-$(CONFIG_PINCTRL_MCP23S08)	+= pinctrl-mcp23s08.o
 obj-$(CONFIG_PINCTRL_MESON)	+= meson/