wifi: mac80211: set wiphy for virtual monitors

Drivers might plausibly want to have this, but also the
locking assertions will need it later.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/mac80211/iface.c

@@ -1134,6 +1134,7 @@ int ieee80211_add_virtual_monitor(struct ieee80211_local *local)
 		 wiphy_name(local->hw.wiphy));
 	sdata->wdev.iftype = NL80211_IFTYPE_MONITOR;
 	mutex_init(&sdata->wdev.mtx);
+	sdata->wdev.wiphy = local->hw.wiphy;
 
 	ieee80211_sdata_init(local, sdata);