mac80211: debugfs: add file to disallow TDLS wider-bw

Sometimes we are interested in testing TDLS performance in a specific
width setting. Add the ability to disable the wider-band feature, thereby
allowing the TDLS channel width to be controlled by the BSS width.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/mac80211/ieee80211_i.h

@@ -535,6 +535,7 @@ struct ieee80211_if_managed {
 	struct sk_buff *teardown_skb; /* A copy to send through the AP */
 	spinlock_t teardown_lock; /* To lock changing teardown_skb */
 	bool tdls_chan_switch_prohibited;
+	bool tdls_wider_bw_prohibited;
 
 	/* WMM-AC TSPEC support */
 	struct ieee80211_sta_tx_tspec tx_tspec[IEEE80211_NUM_ACS];