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

Convert all staging 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 confirmed these are all etherdevices.
Signed-off-by: NJakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/20211019171243.1412240-4-kuba@kernel.orgSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/ks7010/ks_wlan_net.c

@@ -2490,7 +2490,7 @@ int ks_wlan_set_mac_address(struct net_device *dev, void *addr)
 
 	if (netif_running(dev))
 		return -EBUSY;
-	memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
+	eth_hw_addr_set(dev, mac_addr->sa_data);
 	ether_addr_copy(priv->eth_addr, mac_addr->sa_data);
 
 	priv->mac_address_valid = false;

drivers/staging/qlge/qlge_main.c

@@ -724,9 +724,7 @@ static int qlge_get_8000_flash_params(struct qlge_adapter *qdev)
 		goto exit;
 	}
 
-	memcpy(qdev->ndev->dev_addr,
-	       mac_addr,
-	       qdev->ndev->addr_len);
+	eth_hw_addr_set(qdev->ndev, mac_addr);
 
 exit:
 	qlge_sem_unlock(qdev, SEM_FLASH_MASK);
@@ -774,9 +772,7 @@ static int qlge_get_8012_flash_params(struct qlge_adapter *qdev)
 		goto exit;
 	}
 
-	memcpy(qdev->ndev->dev_addr,
-	       qdev->flash.flash_params_8012.mac_addr,
-	       qdev->ndev->addr_len);
+	eth_hw_addr_set(qdev->ndev, qdev->flash.flash_params_8012.mac_addr);
 
 exit:
 	qlge_sem_unlock(qdev, SEM_FLASH_MASK);
@@ -4214,7 +4210,7 @@ static int qlge_set_mac_address(struct net_device *ndev, void *p)
 
 	if (!is_valid_ether_addr(addr->sa_data))
 		return -EADDRNOTAVAIL;
-	memcpy(ndev->dev_addr, addr->sa_data, ndev->addr_len);
+	eth_hw_addr_set(ndev, addr->sa_data);
 	/* Update local copy of current mac address. */
 	memcpy(qdev->current_mac_addr, ndev->dev_addr, ndev->addr_len);
 

drivers/staging/wlan-ng/p80211netdev.c

@@ -616,7 +616,7 @@ static int p80211knetdev_set_mac_address(struct net_device *dev, void *addr)
 		result = -EADDRNOTAVAIL;
 	} else {
 		/* everything's ok, change the addr in netdev */
-		memcpy(dev->dev_addr, new_addr->sa_data, dev->addr_len);
+		eth_hw_addr_set(dev, new_addr->sa_data);
 	}
 
 	return result;