mac80211: move bss_conf into vif

Move bss_conf into the vif struct so that drivers can
access it during ->tx without having to store it in
the private data or similar. No driver updates because
this is only for when they want to start using it.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index df28c5f..cde1452 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -695,7 +695,7 @@
 	ieee80211_setup_sdata(sdata, type);
 
 	/* reset some values that shouldn't be kept across type changes */
-	sdata->bss_conf.basic_rates =
+	sdata->vif.bss_conf.basic_rates =
 		ieee80211_mandatory_rates(sdata->local,
 			sdata->local->hw.conf.channel->band);
 	sdata->drop_unencrypted = 0;