net: phy: bcm54140: use genphy_soft_reset()

Set the .soft_reset() op to be sure there will be a reset even if there
is no hardware reset line registered.
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/phy/bcm54140.c

@@ -862,6 +862,7 @@ static struct phy_driver bcm54140_drivers[] = {
 		.probe		= bcm54140_probe,
 		.suspend	= genphy_suspend,
 		.resume		= genphy_resume,
+		.soft_reset	= genphy_soft_reset,
 		.get_tunable	= bcm54140_get_tunable,
 		.set_tunable	= bcm54140_set_tunable,
 	},