zd1201: use eth_hw_addr_set()

Commit 406f42f ("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.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211018235021.1279697-16-kuba@kernel.org

drivers/net/wireless/zydas/zd1201.c

@@ -507,7 +507,7 @@ static int zd1201_getconfig(struct zd1201 *zd, int rid, void *riddata,
  *		byte	data[12]
  *	total: 16
  */
-static int zd1201_setconfig(struct zd1201 *zd, int rid, void *buf, int len, int wait)
+static int zd1201_setconfig(struct zd1201 *zd, int rid, const void *buf, int len, int wait)
 {
 	int err;
 	unsigned char *request;
@@ -1729,6 +1729,7 @@ static int zd1201_probe(struct usb_interface *interface,
 	int err;
 	short porttype;
 	char buf[IW_ESSID_MAX_SIZE+2];
+	u8 addr[ETH_ALEN];
 
 	usb = interface_to_usbdev(interface);
 
@@ -1779,10 +1780,10 @@ static int zd1201_probe(struct usb_interface *interface,
 	dev->watchdog_timeo = ZD1201_TX_TIMEOUT;
 	strcpy(dev->name, "wlan%d");
 
-	err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR, 
-	    dev->dev_addr, dev->addr_len);
+	err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR, addr, ETH_ALEN);
 	if (err)
 		goto err_start;
+	eth_hw_addr_set(dev, addr);
 
 	/* Set wildcard essid to match zd->essid */
 	*(__le16 *)buf = cpu_to_le16(0);