etherdevice: use __dev_addr_set()

Andrew points out that eth_hw_addr_set() replaces memcpy()
calls so we can't use ether_addr_copy() which assumes
both arguments are 2-bytes aligned.
Reported-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/linux/etherdevice.h

@@ -308,7 +308,7 @@ static inline void ether_addr_copy(u8 *dst, const u8 *src)
  */
 static inline void eth_hw_addr_set(struct net_device *dev, const u8 *addr)
 {
-	ether_addr_copy(dev->dev_addr, addr);
+	__dev_addr_set(dev, addr, ETH_ALEN);
 }
 
 /**