net: freescale: ucc_geth: Fix build error from phy_device API change

dev has moved inside the new mdio structure.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/freescale/ucc_geth.c

@@ -1716,7 +1716,7 @@ static void uec_configure_serdes(struct net_device *dev)
 
 	phy_write(tbiphy, ENET_TBI_MII_CR, TBICR_SETTINGS);
 
-	put_device(&tbiphy->dev);
+	put_device(&tbiphy->mdio.dev);
 }
 
 /* Configure the PHY for dev.