pinctrl: berlin: add the as370 SoC pinctrl driver

Add the pin-controller driver for Synaptics AS370 SoC, with definition
of its groups and functions. This uses the core Berlin pinctrl driver.
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/berlin/Kconfig

@@ -5,6 +5,11 @@ config PINCTRL_BERLIN
 	select PINMUX
 	select REGMAP_MMIO
 
+config PINCTRL_AS370
+	bool "Synaptics as370 pin controller driver"
+	depends on OF
+	select PINCTRL_BERLIN
+
 config PINCTRL_BERLIN_BG2
 	def_bool MACH_BERLIN_BG2
 	depends on OF

drivers/pinctrl/berlin/Makefile

@@ -3,3 +3,4 @@ obj-$(CONFIG_PINCTRL_BERLIN_BG2)	+= berlin-bg2.o
 obj-$(CONFIG_PINCTRL_BERLIN_BG2CD)	+= berlin-bg2cd.o
 obj-$(CONFIG_PINCTRL_BERLIN_BG2Q)	+= berlin-bg2q.o
 obj-$(CONFIG_PINCTRL_BERLIN_BG4CT)	+= berlin-bg4ct.o
+obj-$(CONFIG_PINCTRL_AS370)		+= pinctrl-as370.o