i.mx: iomux-v3.h: move to imx-common include directory

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
diff --git a/drivers/usb/host/ehci-mx6.c b/drivers/usb/host/ehci-mx6.c
index 42c77fe..0280242 100644
--- a/drivers/usb/host/ehci-mx6.c
+++ b/drivers/usb/host/ehci-mx6.c
@@ -22,7 +22,7 @@
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/mx6x_pins.h>
-#include <asm/arch/iomux-v3.h>
+#include <asm/imx-common/iomux-v3.h>
 
 #include "ehci.h"
 #include "ehci-core.h"