net: usb: use eth_hw_addr_set() for dev->addr_len cases

Convert usb 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 these are either usbnet or pure etherdevs.

Signed-off-by: Jakub Kicinski <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/net/usb/dm9601.c

···
 		return -EINVAL;
 	}
 
-	memcpy(net->dev_addr, addr->sa_data, net->addr_len);
+	eth_hw_addr_set(net, addr->sa_data);
 	__dm9601_set_mac_address(dev);
 
 	return 0;

drivers/net/usb/mcs7830.c

···
 		return ret;
 
 	/* it worked --> adopt it on netdev side */
-	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
+	eth_hw_addr_set(netdev, addr->sa_data);
 
 	return 0;
 }

drivers/net/usb/r8152.c

···
 
 	mutex_lock(&tp->control);
 
-	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
+	eth_hw_addr_set(netdev, addr->sa_data);
 
 	ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_CONFIG);
 	pla_ocp_write(tp, PLA_IDR, BYTE_EN_SIX_BYTES, 8, addr->sa_data);

drivers/net/usb/rtl8150.c

···
 	if (netif_running(netdev))
 		return -EBUSY;
 
-	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
+	eth_hw_addr_set(netdev, addr->sa_data);
 	netdev_dbg(netdev, "Setting MAC address to %pM\n", netdev->dev_addr);
 	/* Set the IDR registers. */
 	set_registers(dev, IDR, netdev->addr_len, netdev->dev_addr);

drivers/net/usb/sr9700.c

···
 		return -EINVAL;
 	}
 
-	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
+	eth_hw_addr_set(netdev, addr->sa_data);
 	sr_write_async(dev, SR_PAR, 6, netdev->dev_addr);
 
 	return 0;