ethernet: use eth_hw_addr_set() - casts

eth_hw_addr_set() takes a u8 pointer, like other
etherdevice helpers. Convert the few drivers which
require casts because they memcpy from "endian marked"
types.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/3com/3c509.c

@@ -270,7 +270,7 @@ static void el3_dev_fill(struct net_device *dev, __be16 *phys_addr, int ioaddr,
 {
 	struct el3_private *lp = netdev_priv(dev);
 
-	memcpy(dev->dev_addr, phys_addr, ETH_ALEN);
+	eth_hw_addr_set(dev, (u8 *)phys_addr);
 	dev->base_addr = ioaddr;
 	dev->irq = irq;
 	dev->if_port = if_port;

drivers/net/ethernet/cortina/gemini.c

@@ -2467,7 +2467,7 @@ static int gemini_ethernet_port_probe(struct platform_device *pdev)
 		       DEFAULT_NAPI_WEIGHT);
 
 	if (is_valid_ether_addr((void *)port->mac_addr)) {
-		memcpy(netdev->dev_addr, port->mac_addr, ETH_ALEN);
+		eth_hw_addr_set(netdev, (u8 *)port->mac_addr);
 	} else {
 		dev_dbg(dev, "ethernet address 0x%08x%08x%08x invalid\n",
 			port->mac_addr[0], port->mac_addr[1],

drivers/net/ethernet/intel/e100.c

@@ -2921,7 +2921,7 @@ static int e100_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	e100_phy_init(nic);
 
-	memcpy(netdev->dev_addr, nic->eeprom, ETH_ALEN);
+	eth_hw_addr_set(netdev, (u8 *)nic->eeprom);
 	if (!is_valid_ether_addr(netdev->dev_addr)) {
 		if (!eeprom_bad_csum_allow) {
 			netif_err(nic, probe, nic->netdev, "Invalid MAC address from EEPROM, aborting\n");