iwlagn: remove unused pad argument

The pad argument to iwlagn_txq_free_tfd
isn't used, remove it.

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 269e0c4..fc7dc06 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.h
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.h
@@ -194,7 +194,7 @@
 void iwlagn_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq);
 int iwlagn_txq_attach_buf_to_tfd(struct iwl_priv *priv,
 				 struct iwl_tx_queue *txq,
-				 dma_addr_t addr, u16 len, u8 reset, u8 pad);
+				 dma_addr_t addr, u16 len, u8 reset);
 void iwlagn_hwrate_to_tx_control(struct iwl_priv *priv, u32 rate_n_flags,
 			      struct ieee80211_tx_info *info);
 int iwlagn_tx_skb(struct iwl_priv *priv, struct sk_buff *skb);