mac80211: fix disabling HT in IBSS mode (#21340)

Signed-off-by: Jo-Philipp Wich <[email protected]>

SVN-Revision: 47813

package/kernel/mac80211/files/lib/netifd/wireless/mac80211.sh

@@ -526,6 +526,9 @@ mac80211_setup_adhoc_htmode() {
 		VHT80)
 			ibss_htmode="80Mhz"
 		;;
+		NONE|NOHT)
+			ibss_htmode="NOHT"
+		;;
 		*) ibss_htmode="" ;;
 	esac