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-debug.h b/drivers/net/wireless/iwlwifi/iwl-debug.h
index 335ff5c..4ac06ad 100644
--- a/drivers/net/wireless/iwlwifi/iwl-debug.h
+++ b/drivers/net/wireless/iwlwifi/iwl-debug.h
@@ -78,8 +78,6 @@
 		struct dentry *file_sram;
 		struct dentry *file_nvm;
 		struct dentry *file_stations;
-		struct dentry *file_rx_statistics;
-		struct dentry *file_tx_statistics;
 		struct dentry *file_log_event;
 		struct dentry *file_channels;
 		struct dentry *file_status;
@@ -97,6 +95,8 @@
 		struct dentry *file_disable_tx_power;
 	} dbgfs_rf_files;
 	struct dir_debug_files {
+		struct dentry *file_rx_statistics;
+		struct dentry *file_tx_statistics;
 		struct dentry *file_traffic_log;
 	} dbgfs_debug_files;
 	u32 sram_offset;