wireless: use eth_hw_addr_set() for dev->addr_len cases

Convert all WiFi drivers from memcpy(... dev->addr_len)
to eth_hw_addr_set():

  @@
  expression dev, np;
  @@
  - memcpy(dev->dev_addr, np, dev->addr_len)
  + eth_hw_addr_set(dev, np)

Manually checked the netdevs are allocated with alloc_etherdev(),
so dev->addr_len must be equal to ETH_ALEN.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20211018235021.1279697-4-kuba@kernel.org

drivers/net/wireless/atmel/atmel.c

@@ -1296,7 +1296,7 @@ static int atmel_set_mac_address(struct net_device *dev, void *p)
 {
 	struct sockaddr *addr = p;
 
-	memcpy (dev->dev_addr, addr->sa_data, dev->addr_len);
+	eth_hw_addr_set(dev, addr->sa_data);
 	return atmel_open(dev);
 }
 

drivers/net/wireless/zydas/zd1201.c

@@ -857,7 +857,7 @@ static int zd1201_set_mac_address(struct net_device *dev, void *p)
 	    addr->sa_data, dev->addr_len, 1);
 	if (err)
 		return err;
-	memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+	eth_hw_addr_set(dev, addr->sa_data);
 
 	return zd1201_mac_reset(zd);
 }