of_mdio: Add "broadcom,bcm5241" to the whitelist.

Some Cavium dev boards have firmware which doesn't supply a proper
ethernet-phy-ieee802.3-c22" compatible property.  Restore these boards
to working order by whitelisting this compatible value.
Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/of/of_mdio.c

@@ -147,6 +147,7 @@ EXPORT_SYMBOL(of_mdio_parse_addr);
  */
 static const struct of_device_id whitelist_phys[] = {
 	{ .compatible = "brcm,40nm-ephy" },
+	{ .compatible = "broadcom,bcm5241" },
 	{ .compatible = "marvell,88E1111", },
 	{ .compatible = "marvell,88e1116", },
 	{ .compatible = "marvell,88e1118", },