phy: ulpi_phy: Add const qualifier to ops

The ops is never changed in ulpi_phy_create(), so make it const.

Signed-off-by: Axel Lin <[e-mail]>
Signed-off-by: Kishon Vijay Abraham I <[e-mail]>

drivers/phy/ulpi_phy.h

···
  * and it's controller, which is always the parent.
  */
 static inline struct phy
-*ulpi_phy_create(struct ulpi *ulpi, struct phy_ops *ops)
+*ulpi_phy_create(struct ulpi *ulpi, const struct phy_ops *ops)
 {
 	struct phy *phy;
 	int ret;