ethernet: ec_bhf: 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.

Copy 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/ec_bhf.c

@@ -479,6 +479,7 @@ static int ec_bhf_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	struct net_device *net_dev;
 	struct ec_bhf_priv *priv;
 	void __iomem *dma_io;
+	u8 addr[ETH_ALEN];
 	void __iomem *io;
 	int err = 0;
 
@@ -539,7 +540,8 @@ static int ec_bhf_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	if (err < 0)
 		goto err_free_net_dev;
 
-	memcpy_fromio(net_dev->dev_addr, priv->mii_io + MII_MAC_ADDR, 6);
+	memcpy_fromio(addr, priv->mii_io + MII_MAC_ADDR, ETH_ALEN);
+	eth_hw_addr_set(net_dev, addr);
 
 	err = register_netdev(net_dev);
 	if (err < 0)