net: plip: use eth_hw_addr_set()

Get it ready for constant netdev->dev_addr.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/plip/plip.c

@@ -284,12 +284,16 @@ static const struct net_device_ops plip_netdev_ops = {
 static void
 plip_init_netdev(struct net_device *dev)
 {
+	static const u8 addr_init[ETH_ALEN] = {
+		0xfc, 0xfc, 0xfc,
+		0xfc, 0xfc, 0xfc,
+	};
 	struct net_local *nl = netdev_priv(dev);
 
 	/* Then, override parts of it */
 	dev->tx_queue_len 	 = 10;
 	dev->flags	         = IFF_POINTOPOINT|IFF_NOARP;
-	memset(dev->dev_addr, 0xfc, ETH_ALEN);
+	eth_hw_addr_set(dev, addr_init);
 
 	dev->netdev_ops		 = &plip_netdev_ops;
 	dev->header_ops          = &plip_header_ops;
@@ -1109,7 +1113,7 @@ plip_open(struct net_device *dev)
 		   plip_init_dev(). */
 		const struct in_ifaddr *ifa = rcu_dereference(in_dev->ifa_list);
 		if (ifa != NULL) {
-			memcpy(dev->dev_addr+2, &ifa->ifa_local, 4);
+			dev_addr_mod(dev, 2, &ifa->ifa_local, 4);
 		}
 	}