[MAC80211]: rename ieee80211_cfg.h to cfg.h

Might as well rename ieee80211_cfg.h to cfg.h to keep things consistent.

Signed-off-by: Michael Wu <flamingice@sourmilk.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index d6fc55c..6981ba1 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -11,7 +11,7 @@
 #include <net/net_namespace.h>
 #include <net/cfg80211.h>
 #include "ieee80211_i.h"
-#include "ieee80211_cfg.h"
+#include "cfg.h"
 
 static int ieee80211_add_iface(struct wiphy *wiphy, char *name,
 			       enum nl80211_iftype type)