ath/ath9k: Replace common->splitmic with a flag

Replace common->splitmic with ATH_CRYPT_CAP_MIC_COMBINED flag.

splitmic has to be used when the ATH_CRYPT_CAP_MIC_COMBINED capability flag is
not set.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Acked-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath.h b/drivers/net/wireless/ath/ath.h
index fb24f66..c558407 100644
--- a/drivers/net/wireless/ath/ath.h
+++ b/drivers/net/wireless/ath/ath.h
@@ -78,6 +78,7 @@
 	ATH_CRYPT_CAP_CIPHER_AESCCM		= BIT(3),
 	ATH_CRYPT_CAP_CIPHER_CKIP		= BIT(4),
 	ATH_CRYPT_CAP_CIPHER_TKIP		= BIT(5),
+	ATH_CRYPT_CAP_MIC_COMBINED		= BIT(6),
 };
 
 struct ath_keyval {
@@ -150,7 +151,6 @@
 	u32 keymax;
 	DECLARE_BITMAP(keymap, ATH_KEYMAX);
 	DECLARE_BITMAP(tkip_keymap, ATH_KEYMAX);
-	u8 splitmic;
 	enum ath_crypt_caps crypt_caps;
 
 	struct ath_regulatory regulatory;