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/mm-imx3.c b/arch/arm/mach-imx/mm-imx3.c
index 9d2c843..87fb8644 100644
--- a/arch/arm/mach-imx/mm-imx3.c
+++ b/arch/arm/mach-imx/mm-imx3.c
@@ -29,9 +29,9 @@
 #include <mach/common.h>
 #include <mach/devices-common.h>
 #include <mach/hardware.h>
-#include <mach/iomux-v3.h>
 
 #include "crmregs-imx3.h"
+#include "iomux-v3.h"
 
 void __iomem *mx3_ccm_base;