iwlwifi: remove a parameter (dest) from *_fill_beacon_frame() methods.

This patch removes a parameter (dest) from iwl_fill_beacon_frame() (iwl-agn.c)
 and from iwl3945_fill_beacon_frame(). (iwl-3945.c,iwl-3945.h)

Signed-off-by: Rami Rosen <ramirose@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index 352ccac..d9c6baf 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -1402,7 +1402,7 @@
 
 unsigned int iwl3945_fill_beacon_frame(struct iwl3945_priv *priv,
 				struct ieee80211_hdr *hdr,
-				const u8 *dest, int left)
+				int left)
 {
 
 	if (!iwl3945_is_associated(priv) || !priv->ibss_beacon ||