mac80211: rename files

This patch renames all mac80211 files (except ieee80211_i.h) to get rid
of the useless ieee80211_ prefix.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/tkip.c b/net/mac80211/tkip.c
index 45d59f1..dddbfd6 100644
--- a/net/mac80211/tkip.c
+++ b/net/mac80211/tkip.c
@@ -12,7 +12,7 @@
 #include <linux/netdevice.h>
 
 #include <net/mac80211.h>
-#include "ieee80211_key.h"
+#include "key.h"
 #include "tkip.h"
 #include "wep.h"