ARM: imx51: build in pinctrl support

With the imx51 DT board having pinctrl setup define in device tree,
it's time to remove dummy pinctrl state and build in the real imx51
pinctrl support.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/mach-imx/Kconfig

@@ -101,6 +101,8 @@ config	SOC_IMX51
 	select SOC_IMX5
 	select ARCH_MX5
 	select ARCH_MX51
+	select PINCTRL
+	select PINCTRL_IMX51
 
 if ARCH_IMX_V4_V5
 

arch/arm/mach-imx/imx51-dt.c

@@ -13,7 +13,6 @@
 #include <linux/irq.h>
 #include <linux/of_irq.h>
 #include <linux/of_platform.h>
-#include <linux/pinctrl/machine.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/time.h>
 #include <mach/common.h>
@@ -55,8 +54,6 @@ static void __init imx51_dt_init(void)
 	const struct of_device_id *of_id;
 	void (*func)(void);
 
-	pinctrl_provide_dummies();
-
 	node = of_find_matching_node(NULL, imx51_iomuxc_of_match);
 	if (node) {
 		of_id = of_match_node(imx51_iomuxc_of_match, node);