ath9k: Remove all the useless ah_ variable prefixes

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath9k/phy.h b/drivers/net/wireless/ath9k/phy.h
index 71a7f5a..837a598 100644
--- a/drivers/net/wireless/ath9k/phy.h
+++ b/drivers/net/wireless/ath9k/phy.h
@@ -533,7 +533,7 @@
 #define ATH9K_KEY_XOR                 0xaa
 
 #define ATH9K_IS_MIC_ENABLED(ah)					\
-	((ah)->ah_staId1Defaults & AR_STA_ID1_CRPT_MIC_ENABLE)
+	((ah)->sta_id1_defaults & AR_STA_ID1_CRPT_MIC_ENABLE)
 
 #define ANTSWAP_AB 0x0001
 #define REDUCE_CHAIN_0 0x00000050