usb: ulpi: remove calls to old api callbacks

Now that all users use the new api callbacks, remove the old api
callbacks and force new interface drivers to use the new api.
Acked-by: NHeikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: NTal Shorer <tal.shorer@gmail.com>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/common/ulpi.c

@@ -21,16 +21,12 @@
 
 int ulpi_read(struct ulpi *ulpi, u8 addr)
 {
-	if (!ulpi->ops->read_dev)
-		return ulpi->ops->read(ulpi->ops, addr);
 	return ulpi->ops->read_dev(ulpi->dev.parent, addr);
 }
 EXPORT_SYMBOL_GPL(ulpi_read);
 
 int ulpi_write(struct ulpi *ulpi, u8 addr, u8 val)
 {
-	if (!ulpi->ops->write_dev)
-		return ulpi->ops->write(ulpi->ops, addr, val);
 	return ulpi->ops->write_dev(ulpi->dev.parent, addr, val);
 }
 EXPORT_SYMBOL_GPL(ulpi_write);

include/linux/ulpi/interface.h

@@ -13,8 +13,6 @@ struct ulpi;
  */
 struct ulpi_ops {
 	struct device *dev;
-	int (*read)(struct ulpi_ops *ops, u8 addr);
-	int (*write)(struct ulpi_ops *ops, u8 addr, u8 val);
 	int (*read_dev)(struct device *dev, u8 addr);
 	int (*write_dev)(struct device *dev, u8 addr, u8 val);
 };