Revert "mdio_bus: fix mdio_register_device when RESET_CONTROLLER is disabled"

This reverts commit 075e238d.

Going to go with Geert's fix instead, which also has a
correct Fixes tag.
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/phy/mdio_bus.c

@@ -65,8 +65,7 @@ static int mdiobus_register_reset(struct mdio_device *mdiodev)
 		reset = devm_reset_control_get_exclusive(&mdiodev->dev,
 							 "phy");
 	if (IS_ERR(reset)) {
-		if (PTR_ERR(reset) == -ENOENT || PTR_ERR(reset) == -ENOSYS ||
-		    PTR_ERR(reset) == -ENOTSUPP)
+		if (PTR_ERR(reset) == -ENOENT || PTR_ERR(reset) == -ENOSYS)
 			reset = NULL;
 		else
 			return PTR_ERR(reset);