ethernet: manually convert memcpy(dev_addr,..., sizeof(addr))

A handful of drivers use sizeof(addr) for the size of
the address, after manually confirming the size is
indeed 6 convert them to eth_hw_addr_set().

Acked-by: Florian Fainelli <[e-mail]>
Acked-by: Petko Manolov <[e-mail]>
Acked-by: Nicolas Ferre <[e-mail]>
Signed-off-by: Jakub Kicinski <[e-mail]>

drivers/net/ethernet/cadence/macb_main.c

···
 		addr[5] = (top >> 8) & 0xff;
 
 		if (is_valid_ether_addr(addr)) {
-			memcpy(bp->dev->dev_addr, addr, sizeof(addr));
+			eth_hw_addr_set(bp->dev, addr);
 			return;
 		}
 	}

drivers/net/ethernet/dnet.c

···
 	*((__be16 *)(addr + 4)) = cpu_to_be16(tmp);
 
 	if (is_valid_ether_addr(addr))
-		memcpy(bp->dev->dev_addr, addr, sizeof(addr));
+		eth_hw_addr_set(bp->dev, addr);
 }
 
 static int dnet_mdio_read(struct mii_bus *bus, int mii_id, int regnum)

drivers/net/ethernet/pasemi/pasemi_mac.c

···
 		err = -ENODEV;
 		goto out;
 	}
-	memcpy(dev->dev_addr, mac->mac_addr, sizeof(mac->mac_addr));
+	eth_hw_addr_set(dev, mac->mac_addr);
 
 	ret = mac_to_intf(mac);
 	if (ret < 0) {

drivers/net/ethernet/ti/cpmac.c

···
 	priv->dev = dev;
 	priv->ring_size = 64;
 	priv->msg_enable = netif_msg_init(debug_level, 0xff);
-	memcpy(dev->dev_addr, pdata->dev_addr, sizeof(pdata->dev_addr));
+	eth_hw_addr_set(dev, pdata->dev_addr);
 
 	snprintf(priv->phy_name, MII_BUS_ID_SIZE, PHY_ID_FMT,
 						mdio_bus_id, phy_id);

drivers/net/usb/pegasus.c

···
 			goto err;
 	}
 
-	memcpy(pegasus->net->dev_addr, node_id, sizeof(node_id));
+	eth_hw_addr_set(pegasus->net, node_id);
 
 	return;
 err: