mac80211: Use eth_<foo>_addr instead of memset

Use the built-in function instead of memset.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index b606b53..f9b0758 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -1742,7 +1742,7 @@
 
 	ieee80211_ibss_disconnect(sdata);
 	ifibss->ssid_len = 0;
-	memset(ifibss->bssid, 0, ETH_ALEN);
+	eth_zero_addr(ifibss->bssid);
 
 	/* remove beacon */
 	kfree(sdata->u.ibss.ie);