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>

drivers/net/wireless/ath9k/phy.c

@@ -14,10 +14,7 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#include "core.h"
-#include "hw.h"
-#include "reg.h"
-#include "phy.h"
+#include "ath9k.h"
 
 void
 ath9k_hw_write_regs(struct ath_hal *ah, u32 modesIndex, u32 freqIndex,