mac80211: move A-MSDU identifier to flags

This patch moves u8 amsdu_frame in ieee80211_txrx_data to the flags
section as IEEE80211_TXRXD_RX_AMSDU

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 4525d73..0020e40 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -244,9 +244,9 @@
 		/* frame has qos control */
 		tid = qc[0] & QOS_CONTROL_TID_MASK;
 		if (qc[0] & IEEE80211_QOS_CONTROL_A_MSDU_PRESENT)
-			rx->u.rx.amsdu_frame = 1;
+			rx->flags |= IEEE80211_TXRXD_RX_AMSDU;
 		else
-			rx->u.rx.amsdu_frame = 0;
+			rx->flags &= ~IEEE80211_TXRXD_RX_AMSDU;
 	} else {
 		if (unlikely((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT)) {
 			/* Separate TID for management frames */
@@ -1221,7 +1221,7 @@
 	if (unlikely(!WLAN_FC_DATA_PRESENT(fc)))
 		return TXRX_DROP;
 
-	if (!rx->u.rx.amsdu_frame)
+	if (!(rx->flags & IEEE80211_TXRXD_RX_AMSDU))
 		return TXRX_CONTINUE;
 
 	err = ieee80211_data_to_8023(rx);