sh-eth: use an unique MDIO bus name.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/renesas/sh_eth.c

@@ -1702,7 +1702,8 @@ static int sh_mdio_init(struct net_device *ndev, int id,
 	/* Hook up MII support for ethtool */
 	mdp->mii_bus->name = "sh_mii";
 	mdp->mii_bus->parent = &ndev->dev;
-	snprintf(mdp->mii_bus->id, MII_BUS_ID_SIZE, "%x", id);
+	snprintf(mdp->mii_bus->id, MII_BUS_ID_SIZE, "%s-%x",
+		mdp->pdev->name, pdid);
 
 	/* PHY IRQ */
 	mdp->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);