ath5k: Print rx/tx bytes in debugfs

This adds counters for tx and rx bytes, including any
errored packets as well as all wireless headers.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Acked-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath5k/base.h b/drivers/net/wireless/ath/ath5k/base.h
index b9f6d13..9a79773 100644
--- a/drivers/net/wireless/ath/ath5k/base.h
+++ b/drivers/net/wireless/ath/ath5k/base.h
@@ -121,6 +121,13 @@
 	/* frame errors */
 	unsigned int rx_all_count;	/* all RX frames, including errors */
 	unsigned int tx_all_count;	/* all TX frames, including errors */
+	unsigned int rx_bytes_count;	/* all RX bytes, including errored pks
+					 * and the MAC headers for each packet
+					 */
+	unsigned int tx_bytes_count;	/* all TX bytes, including errored pkts
+					 * and the MAC headers and padding for
+					 * each packet.
+					 */
 	unsigned int rxerr_crc;
 	unsigned int rxerr_phy;
 	unsigned int rxerr_phy_code[32];