usb: ulpi: remove "dev" field from struct ulpi_ops

Operations now use ulpi->dev.parent directly instead of via the
ulpi_ops struct, making this field unused. Remove it.
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

@@ -212,7 +212,6 @@ struct ulpi *ulpi_register_interface(struct device *dev, struct ulpi_ops *ops)
 		return ERR_PTR(-ENOMEM);
 
 	ulpi->ops = ops;
-	ops->dev = dev;
 
 	ret = ulpi_register(dev, ulpi);
 	if (ret) {

include/linux/ulpi/interface.h

@@ -4,15 +4,14 @@
 #include <linux/types.h>
 
 struct ulpi;
+struct device;
 
 /**
  * struct ulpi_ops - ULPI register access
- * @dev: the interface provider
  * @read: read operation for ULPI register access
  * @write: write operation for ULPI register access
  */
 struct ulpi_ops {
-	struct device *dev;
 	int (*read)(struct device *dev, u8 addr);
 	int (*write)(struct device *dev, u8 addr, u8 val);
 };