ARM: imx: Remove mxc specific ulpi access ops

There are ulpi access ops implemented in drivers/usb/phy/phy-ulpi.c.
mxc access ops implement the same access operations within mach-imx. This
patch removes the mxc ulpi file and uses phy-ulpi instead for
imx_otg_ulpi_create.

phy-ulpi successfully tested with i.MX27 Phytec phyCARD-S (pca100).

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/mach-imx/ulpi.h

@@ -1,8 +1,13 @@
 #ifndef __MACH_ULPI_H
 #define __MACH_ULPI_H
 
-#ifdef CONFIG_USB_ULPI
-struct usb_phy *imx_otg_ulpi_create(unsigned int flags);
+#include <linux/usb/ulpi.h>
+
+#ifdef CONFIG_USB_ULPI_VIEWPORT
+static inline struct usb_phy *imx_otg_ulpi_create(unsigned int flags)
+{
+	return otg_ulpi_create(&ulpi_viewport_access_ops, flags);
+}
 #else
 static inline struct usb_phy *imx_otg_ulpi_create(unsigned int flags)
 {
@@ -10,7 +15,5 @@ static inline struct usb_phy *imx_otg_ulpi_create(unsigned int flags)
 }
 #endif
 
-extern struct usb_phy_io_ops mxc_ulpi_access_ops;
-
 #endif /* __MACH_ULPI_H */