ARM: imx: move iomux drivers and headers into mach-imx

The board files in mach-imx are the only users of iomux drivers and
headers.  Move them into mach-imx from plat-mxc.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/arch/arm/mach-imx/mach-mx35_3ds.c b/arch/arm/mach-imx/mach-mx35_3ds.c
index aac59b0..63d7a76 100644
--- a/arch/arm/mach-imx/mach-mx35_3ds.c
+++ b/arch/arm/mach-imx/mach-mx35_3ds.c
@@ -45,13 +45,13 @@
 
 #include <mach/hardware.h>
 #include <mach/common.h>
-#include <mach/iomux-mx35.h>
 #include <video/platform_lcd.h>
 
 #include <media/soc_camera.h>
 
 #include "3ds_debugboard.h"
 #include "devices-imx35.h"
+#include "iomux-mx35.h"
 
 #define GPIO_MC9S08DZ60_GPS_ENABLE 0
 #define GPIO_MC9S08DZ60_HDD_ENABLE 4