staging: wlan-ng: Fixing coding style warning

Removes following warnings found by checkpatch.pl script:
    WARNING: line over 80 characters

Signed-off-by: Rodrigo Zaiden <rodrigoffzz@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wlan-ng/p80211netdev.c

@@ -641,7 +641,8 @@ static int p80211knetdev_set_mac_address(struct net_device *dev, void *addr)
 	dot11req.msgcode = DIDmsg_dot11req_mibset;
 	dot11req.msglen = sizeof(dot11req);
 	memcpy(dot11req.devname,
-	       ((struct wlandevice *)dev->ml_priv)->name, WLAN_DEVNAMELEN_MAX - 1);
+	       ((struct wlandevice *)dev->ml_priv)->name,
+	       WLAN_DEVNAMELEN_MAX - 1);
 
 	/* Set up the mibattribute argument */
 	mibattr->did = DIDmsg_dot11req_mibset_mibattribute;