ath5k: remove own (wrong) IEEE80211_MAX_LEN

Use the version already supplied in include/linux/ieee80211.h.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath5k/ath5k.h b/drivers/net/wireless/ath/ath5k/ath5k.h
index 9129e51..f399c4d 100644
--- a/drivers/net/wireless/ath/ath5k/ath5k.h
+++ b/drivers/net/wireless/ath/ath5k/ath5k.h
@@ -175,7 +175,7 @@
 #define AR5K_TUNE_ADDITIONAL_SWBA_BACKOFF	0
 #define AR5K_TUNE_RADAR_ALERT			false
 #define AR5K_TUNE_MIN_TX_FIFO_THRES		1
-#define AR5K_TUNE_MAX_TX_FIFO_THRES		((IEEE80211_MAX_LEN / 64) + 1)
+#define AR5K_TUNE_MAX_TX_FIFO_THRES	((IEEE80211_MAX_FRAME_LEN / 64) + 1)
 #define AR5K_TUNE_REGISTER_TIMEOUT		20000
 /* Register for RSSI threshold has a mask of 0xff, so 255 seems to
  * be the max value. */
@@ -343,9 +343,6 @@
 #define AR5K_SREV_PHY_5413	0x61
 #define AR5K_SREV_PHY_2425	0x70
 
-/* IEEE defs */
-#define IEEE80211_MAX_LEN       2500
-
 /* TODO add support to mac80211 for vendor-specific rates and modes */
 
 /*