mac80211: add missing update on rx status VHT flag

Add missing update on the rx status vht flag of the last
data packet. Otherwise, cfg80211_calculate_bitrate_vht
may not consider the channel width resulting in wrong
calculation of the received bitrate.

Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 58e4b70..f3719e6 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1238,6 +1238,7 @@
 		if (ieee80211_is_data(hdr->frame_control)) {
 			sta->last_rx_rate_idx = status->rate_idx;
 			sta->last_rx_rate_flag = status->flag;
+			sta->last_rx_rate_vht_flag = status->vht_flag;
 			sta->last_rx_rate_vht_nss = status->vht_nss;
 		}
 	}