From: Andrew Lunn <andrew@xxxxxxx>
Convert the PCS-XPCS driver to make use of the C45 MDIO bus API for
modify_change().
Signed-off-by: Andrew Lunn <andrew@xxxxxxx>
Signed-off-by: Michael Walle <michael@xxxxxxxx>
Reviewed-by: Vladimir Oltean <vladimir.oltean@xxxxxxx>