ath9k: Header file cleanup

Split the core header files into manageable pieces.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c
index 4095fec..2ed0bd2 100644
--- a/drivers/net/wireless/ath9k/main.c
+++ b/drivers/net/wireless/ath9k/main.c
@@ -15,9 +15,7 @@
  */
 
 #include <linux/nl80211.h>
-#include "core.h"
-#include "reg.h"
-#include "hw.h"
+#include "ath9k.h"
 
 #define ATH_PCI_VERSION "0.1"