wlcore: 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.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/ti/wlcore/main.c

@@ -6077,7 +6077,8 @@ static int wl1271_init_ieee80211(struct wl1271 *wl)
 		IEEE80211_HW_AMPDU_AGGREGATION |
 		IEEE80211_HW_TX_AMPDU_SETUP_IN_HW |
 		IEEE80211_HW_QUEUE_CONTROL |
-		IEEE80211_HW_CHANCTX_STA_CSA;
+		IEEE80211_HW_CHANCTX_STA_CSA |
+		IEEE80211_HW_SUPPORT_FAST_XMIT;
 
 	wl->hw->wiphy->cipher_suites = cipher_suites;
 	wl->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);