wireless: remove print_mac uses

Use %pM instead, and also remove stray variables
declared with DECLARE_MAC_BUF.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/wl12xx/wl1251_main.c b/drivers/net/wireless/wl12xx/wl1251_main.c
index 106b0f2..509cbef 100644
--- a/drivers/net/wireless/wl12xx/wl1251_main.c
+++ b/drivers/net/wireless/wl12xx/wl1251_main.c
@@ -435,11 +435,10 @@
 				   struct ieee80211_if_init_conf *conf)
 {
 	struct wl1251 *wl = hw->priv;
-	DECLARE_MAC_BUF(mac);
 	int ret = 0;
 
-	wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %s",
-		     conf->type, print_mac(mac, conf->mac_addr));
+	wl1251_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
+		     conf->type, conf->mac_addr);
 
 	mutex_lock(&wl->mutex);