ARM: mxs: enable pinctrl support

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
diff --git a/arch/arm/mach-mxs/Kconfig b/arch/arm/mach-mxs/Kconfig
index c57f996..07d5383 100644
--- a/arch/arm/mach-mxs/Kconfig
+++ b/arch/arm/mach-mxs/Kconfig
@@ -9,11 +9,13 @@
 	bool
 	select CPU_ARM926T
 	select HAVE_PWM
+	select PINCTRL_IMX23
 
 config SOC_IMX28
 	bool
 	select CPU_ARM926T
 	select HAVE_PWM
+	select PINCTRL_IMX28
 
 comment "MXS platforms:"