mac80211_hwsim: enable IEEE80211_HW_SUPPORT_FAST_XMIT

For hwsim, the duration field in frames is already not valid for
the common case of HT/VHT MCSes, so there's little point in trying
to keep it accurate for the legacy rates. Enable the fast-xmit code
to allow testing that, although given the dependency on hardware
crypto it will only be enabled in open network configurations.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/mac80211_hwsim.c

@@ -2399,7 +2399,8 @@ static int mac80211_hwsim_new_radio(struct genl_info *info,
 		    IEEE80211_HW_WANT_MONITOR_VIF |
 		    IEEE80211_HW_QUEUE_CONTROL |
 		    IEEE80211_HW_SUPPORTS_HT_CCK_RATES |
-		    IEEE80211_HW_CHANCTX_STA_CSA;
+		    IEEE80211_HW_CHANCTX_STA_CSA |
+		    IEEE80211_HW_SUPPORT_FAST_XMIT;
 	if (rctbl)
 		hw->flags |= IEEE80211_HW_SUPPORTS_RC_TABLE;