net: xtensa: use eth_hw_addr_set()

Commit 406f42fa ("net-next: When a bond have a massive amount
of VLANs...") introduced a rbtree for faster Ethernet address look
up. To maintain netdev->dev_addr in this tree we need to make all
the writes to it go through appropriate helpers.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/xtensa/platforms/iss/network.c

@@ -124,7 +124,7 @@ static char *split_if_spec(char *str, ...)
 
 static void setup_etheraddr(struct net_device *dev, char *str)
 {
-	unsigned char *addr = dev->dev_addr;
+	u8 addr[ETH_ALEN];
 
 	if (str == NULL)
 		goto random;
@@ -147,6 +147,7 @@ static void setup_etheraddr(struct net_device *dev, char *str)
 	if (!is_local_ether_addr(addr))
 		pr_warn("%s: assigning a globally valid ethernet address\n",
 			dev->name);
+	eth_hw_addr_set(dev, addr);
 	return;
 
 random: