pinctrl: add pinctrl driver for imx6sl

Add a pinctrl driver for i.MX6 SoloLite based on pinctrl-imx core
driver.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index e8a564a..f06df07 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -100,6 +100,14 @@
 	help
 	  Say Y here to enable the imx6q/dl pinctrl driver
 
+config PINCTRL_IMX6SL
+	bool "IMX6SL pinctrl driver"
+	depends on OF
+	depends on SOC_IMX6SL
+	select PINCTRL_IMX
+	help
+	  Say Y here to enable the imx6sl pinctrl driver
+
 config PINCTRL_LANTIQ
 	bool
 	depends on LANTIQ