pinctrl/nomadik: add STn8815 ASIC support

This adds support for the STN8815 ASIC for the Nomadik pin
controller.

Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index 062f1a3..606b953 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -86,6 +86,10 @@
 	select PINMUX
 	select PINCONF
 
+config PINCTRL_STN8815
+	bool "STN8815 pin controller driver"
+	depends on PINCTRL_NOMADIK && ARCH_NOMADIK
+
 config PINCTRL_DB8500
 	bool "DB8500 pin controller driver"
 	depends on PINCTRL_NOMADIK && ARCH_U8500