cfg80211: set preset_chandef after channel switch

Set preset_chandef in channel switch notification.
In other case we will have old preset_chandef.

Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/wireless/nl80211.c

@@ -11216,6 +11216,7 @@ void cfg80211_ch_switch_notify(struct net_device *dev,
 		return;
 
 	wdev->channel = chandef->chan;
+	wdev->preset_chandef = *chandef;
 	nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL);
 }
 EXPORT_SYMBOL(cfg80211_ch_switch_notify);