iwlwifi: Traffic type and counter for debugFs

Break down the traffic type and counter for both Tx and Rx.
Enhance the tx_statistics and rx_statistics debugfs function and move
to /sys/kernel/debug/ieee80211/phy0/iwlagn/debug directory to help
better debugging both driver and uCode related problems.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c
index 5586003..43b2fce 100644
--- a/drivers/net/wireless/iwlwifi/iwl-rx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-rx.c
@@ -745,14 +745,6 @@
 }
 #endif
 
-static void iwl_update_rx_stats(struct iwl_priv *priv, u16 fc, u16 len)
-{
-	/* 0 - mgmt, 1 - cnt, 2 - data */
-	int idx = (fc & IEEE80211_FCTL_FTYPE) >> 2;
-	priv->rx_stats[idx].cnt++;
-	priv->rx_stats[idx].bytes += len;
-}
-
 /*
  * returns non-zero if packet should be dropped
  */
@@ -930,7 +922,7 @@
 	    iwl_set_decrypted_flag(priv, hdr, ampdu_status, stats))
 		return;
 
-	iwl_update_rx_stats(priv, le16_to_cpu(hdr->frame_control), len);
+	iwl_update_stats(priv, false, hdr->frame_control, len);
 	memcpy(IEEE80211_SKB_RXCB(rxb->skb), stats, sizeof(*stats));
 	ieee80211_rx_irqsafe(priv->hw, rxb->skb);
 	priv->alloc_rxb_skb--;