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/reg.h b/drivers/net/wireless/ath9k/reg.h
index c967b79..45b9fbf 100644
--- a/drivers/net/wireless/ath9k/reg.h
+++ b/drivers/net/wireless/ath9k/reg.h
@@ -160,6 +160,7 @@
 
 #define AR_SREV_VERSION_9100                  0x014
 
+#define AR_SREV_9100(ah) ((ah->ah_macVersion) == AR_SREV_VERSION_9100)
 #define AR_SREV_5416_V20_OR_LATER(_ah) \
 	(AR_SREV_9100((_ah)) || AR_SREV_5416_20_OR_LATER(_ah))
 #define AR_SREV_5416_V22_OR_LATER(_ah) \