net: pcs: pcs-xpcs: Use C45 MDIO API

Convert the PCS-XPCS driver to make use of the C45 MDIO bus API for
modify_change().
Signed-off-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NMichael Walle <michael@walle.cc>
Reviewed-by: NVladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

drivers/net/pcs/pcs-xpcs.c

@@ -199,9 +199,7 @@ int xpcs_write(struct dw_xpcs *xpcs, int dev, u32 reg, u16 val)
 static int xpcs_modify_changed(struct dw_xpcs *xpcs, int dev, u32 reg,
 			       u16 mask, u16 set)
 {
-	u32 reg_addr = mdiobus_c45_addr(dev, reg);
-
-	return mdiodev_modify_changed(xpcs->mdiodev, reg_addr, mask, set);
+	return mdiodev_c45_modify_changed(xpcs->mdiodev, dev, reg, mask, set);
 }
 
 static int xpcs_read_vendor(struct dw_xpcs *xpcs, int dev, u32 reg)