mac80211: remove underscores from some key functions

Some key function don't exist without underscores, so
remove the underscores from those.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/key.h b/net/mac80211/key.h
index 8ef56cd..a353ddd6 100644
--- a/net/mac80211/key.h
+++ b/net/mac80211/key.h
@@ -134,7 +134,7 @@
 int ieee80211_key_link(struct ieee80211_key *key,
 		       struct ieee80211_sub_if_data *sdata,
 		       struct sta_info *sta);
-void __ieee80211_key_free(struct ieee80211_key *key, bool delay_tailroom);
+void ieee80211_key_free(struct ieee80211_key *key, bool delay_tailroom);
 void ieee80211_key_free_unused(struct ieee80211_key *key);
 void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx,
 			       bool uni, bool multi);