Staging: wilc1000: Prefer eth_broadcast_addr over memset()

This patch is to the host_interface.c that fixes up following
warning by checkpatch:

-prefer eth_broadcast_addr() over memset()
Signed-off-by: Punit Vara <punitvara@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wilc1000/host_interface.c

@@ -4571,7 +4571,7 @@ s32 host_int_del_station(struct host_if_drv *hif_drv, const u8 *pu8MacAddr)
 	msg.drv = hif_drv;
 
 	if (!pu8MacAddr)
-		memset(pstrDelStationMsg->mac_addr, 255, ETH_ALEN);
+		eth_broadcast_addr(pstrDelStationMsg->mac_addr);
 	else
 		memcpy(pstrDelStationMsg->mac_addr, pu8MacAddr, ETH_ALEN);