ath9k_htc: Fix TKIP disconnect failure with HTC drivers

The following commit removed splitmic. But forgot to add
ATH_CRYPT_CAP_MIC_COMBINED flag for HTC drivers which causes
TKIP to fail.

Author: Bruno Randolf <br1@einfach.org>
Date:   Wed Sep 8 16:04:54 2010 +0900

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

    Replace common->splitmic with ATH_CRYPT_CAP_MIC_COMBINED flag.
Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/ath/ath9k/htc_drv_init.c

@@ -561,6 +561,9 @@ static void ath9k_init_crypto(struct ath9k_htc_priv *priv)
 		common->keymax = ATH_KEYMAX;
 	}
 
+	if (priv->ah->misc_mode & AR_PCU_MIC_NEW_LOC_ENA)
+		common->crypt_caps |= ATH_CRYPT_CAP_MIC_COMBINED;
+
 	/*
 	 * Reset the key cache since some parts do not
 	 * reset the contents on initial power up.