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-bug.c b/arch/arm/mach-imx/mach-bug.c
index 9a98977..55b71d1 100644
--- a/arch/arm/mach-imx/mach-bug.c
+++ b/arch/arm/mach-imx/mach-bug.c
@@ -19,7 +19,6 @@
 #include <linux/init.h>
 #include <linux/platform_device.h>
 
-#include <mach/iomux-mx3.h>
 #include <mach/hardware.h>
 #include <mach/common.h>
 
@@ -28,6 +27,7 @@
 #include <asm/mach-types.h>
 
 #include "devices-imx31.h"
+#include "iomux-mx3.h"
 
 static const struct imxuart_platform_data uart_pdata __initconst = {
 	.flags = IMXUART_HAVE_RTSCTS,