p54: add lots of useful rx/tx statistics

The firmware can provide lots of useful statistics about noise floor,
mac time and lots of numbers about successful transfers and dropped
frames.

Signed-off-by: Christian Lamparter <chunkeey@web.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/p54/p54.h b/drivers/net/wireless/p54/p54.h
index ea72b65..370202f 100644
--- a/drivers/net/wireless/p54/p54.h
+++ b/drivers/net/wireless/p54/p54.h
@@ -91,6 +91,11 @@
 	u32 tsf_low32;
 	u32 tsf_high32;
 	struct ieee80211_tx_queue_stats tx_stats[8];
+	struct ieee80211_low_level_stats stats;
+	struct timer_list stats_timer;
+	struct completion stats_comp;
+	void *cached_stats;
+	int noise;
 	void *eeprom;
 	struct completion eeprom_comp;
 };