ethernet: mv643xx: 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 got through appropriate helpers.

Read the address into an array on the stack, then call
eth_hw_addr_set().
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/mv643xx_eth.c

@@ -2925,10 +2925,14 @@ static void set_params(struct mv643xx_eth_private *mp,
 	struct net_device *dev = mp->dev;
 	unsigned int tx_ring_size;
 
-	if (is_valid_ether_addr(pd->mac_addr))
+	if (is_valid_ether_addr(pd->mac_addr)) {
 		eth_hw_addr_set(dev, pd->mac_addr);
-	else
-		uc_addr_get(mp, dev->dev_addr);
+	} else {
+		u8 addr[ETH_ALEN];
+
+		uc_addr_get(mp, addr);
+		eth_hw_addr_set(dev, addr);
+	}
 
 	mp->rx_ring_size = DEFAULT_RX_QUEUE_SIZE;
 	if (pd->rx_queue_size)