Now that all MDIO bus drivers which support C45 implement the c45
specific ops, remove the fallback to the old method.
Signed-off-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NMichael Walle <michael@walle.cc>
Reviewed-by: NRussell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>