net: Fix driver name for mdio-gpio.c

Since commit
"74888760... dt/net: Eliminate users of of_platform_{,un}register_driver"
there are two platform drivers named "mdio-gpio" registered.
I renamed the of variant to "mdio-ofgpio".
Signed-off-by: Dirk Eibach <eibach@gdsys.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/phy/mdio-gpio.c

@@ -241,7 +241,7 @@ MODULE_DEVICE_TABLE(of, mdio_ofgpio_match);
 
 static struct platform_driver mdio_ofgpio_driver = {
 	.driver = {
-		.name = "mdio-gpio",
+		.name = "mdio-ofgpio",
 		.owner = THIS_MODULE,
 		.of_match_table = mdio_ofgpio_match,
 	},