p54: add beacon filtering support

This patch adds beacon filtering support to p54.

Signed-off-by: Christian Lamparter <chunkeey@web.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/p54/p54.h b/drivers/net/wireless/p54/p54.h
index 4499035..d6354fa 100644
--- a/drivers/net/wireless/p54/p54.h
+++ b/drivers/net/wireless/p54/p54.h
@@ -134,6 +134,7 @@
 
 struct p54_common {
 	struct ieee80211_hw *hw;
+	struct ieee80211_vif *vif;
 	void (*tx)(struct ieee80211_hw *dev, struct sk_buff *skb);
 	int (*open)(struct ieee80211_hw *dev);
 	void (*stop)(struct ieee80211_hw *dev);