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-3945.c b/drivers/net/wireless/iwlwifi/iwl-3945.c
index bfd509f..ae7f163 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945.c
+++ b/drivers/net/wireless/iwlwifi/iwl-3945.c
@@ -577,6 +577,8 @@
 	if (ieee80211_is_data(hdr->frame_control))
 		priv->rxtxpackets += len;
 #endif
+	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);
 	rxb->skb = NULL;