arm/imx: let platform files include the SoC-specific iomux header

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
diff --git a/arch/arm/mach-mx2/mach-mx27_3ds.c b/arch/arm/mach-mx2/mach-mx27_3ds.c
index 8c975f6..b2f4e0d 100644
--- a/arch/arm/mach-mx2/mach-mx27_3ds.c
+++ b/arch/arm/mach-mx2/mach-mx27_3ds.c
@@ -26,7 +26,7 @@
 #include <mach/hardware.h>
 #include <mach/common.h>
 #include <mach/imx-uart.h>
-#include <mach/iomux.h>
+#include <mach/iomux-mx27.h>
 #include <mach/board-mx27pdk.h>
 
 #include "devices.h"