Correct net80211 channel flag.

[qcwap]

This patch corrects ieee80211_vht_get_vhtcap_ie for 160/80P80 channel width recognition. 

diff --git a/sys/net80211/ieee80211.h b/sys/net80211/ieee80211.h
index 86ab1459cca..76c43629b33 100644
--- a/sys/net80211/ieee80211.h
+++ b/sys/net80211/ieee80211.h
@@ -811,9 +811,9 @@ struct ieee80211_ie_vht_operation {
 #define	IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_MASK	0x0000000C
 #define	IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_MASK_S	2
 #define	IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_NONE		0
-#define	IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_160MHZ		1
-#define	IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_160_80P80MHZ	2
-#define	IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_RESERVED	3
+#define	IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_160MHZ		4
+#define	IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_160_80P80MHZ	8
+#define	IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_RESERVED	16
 
 #define	IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_IS_160MHZ(_vhtcaps)		\
     (_IEEE80211_MASKSHIFT(_vhtcaps, IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_MASK) >= \