mac80211: make address arguments to sta_info_alloc const

No real changes, just note that they are const.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index 63f4d31..15b3bb7 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -522,7 +522,7 @@
  * until sta_info_insert().
  */
 struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
-				u8 *addr, gfp_t gfp);
+				const u8 *addr, gfp_t gfp);
 
 void sta_info_free(struct ieee80211_local *local, struct sta_info *sta);