ath10k: enable IEEE80211_HW_SUPPORT_FAST_XMIT

The driver can clearly enable fast-xmit since it does rate
control in the device and thus must do duration calculation
there as well.

Change-Id: Iedc6f51b40bcd2e52dd55f8db3eab878488e5043
Acked-by: Kalle Valo <kvalo@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index aeb1ab3..d5d0045 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -5501,7 +5501,8 @@
 			IEEE80211_HW_HAS_RATE_CONTROL |
 			IEEE80211_HW_AP_LINK_PS |
 			IEEE80211_HW_SPECTRUM_MGMT |
-			IEEE80211_HW_SW_CRYPTO_CONTROL;
+			IEEE80211_HW_SW_CRYPTO_CONTROL |
+			IEEE80211_HW_SUPPORT_FAST_XMIT;
 
 	ar->hw->wiphy->features |= NL80211_FEATURE_STATIC_SMPS;