iwlagn: don't use CCK rates for P2P interfaces

P2P interfaces must not use CCK rates, only OFDM
rates are allowed. To set this up, we need to set
up the broadcast station to start with 6M instead
of starting with 1M.

Since the interface type can change, also reset
the broadcast station when RXON changes.

This will affect beacons as well.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.h b/drivers/net/wireless/iwlwifi/iwl-agn.h
index 6d5584a..dcdf225 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.h
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.h
@@ -304,6 +304,8 @@
 int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta,
 			int tid);
 void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt);
+int iwl_update_bcast_station(struct iwl_priv *priv,
+			     struct iwl_rxon_context *ctx);
 int iwl_update_bcast_stations(struct iwl_priv *priv);
 void iwlagn_mac_sta_notify(struct ieee80211_hw *hw,
 			   struct ieee80211_vif *vif,