net: phy: mdio-octeon: use platform_set_drvdata()

Use the wrapper functions for getting and setting the driver data using
platform_device instead of using dev_set_drvdata() with &pdev->dev,
so we can directly pass a struct platform_device.
Signed-off-by: Libo Chen <libo.chen@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/phy/mdio-octeon.c

@@ -222,7 +222,7 @@ static int octeon_mdiobus_probe(struct platform_device *pdev)
 	bus->mii_bus->read = octeon_mdiobus_read;
 	bus->mii_bus->write = octeon_mdiobus_write;
 
-	dev_set_drvdata(&pdev->dev, bus);
+	platform_set_drvdata(pdev, bus);
 
 	err = of_mdiobus_register(bus->mii_bus, pdev->dev.of_node);
 	if (err)