cxgb - fix T2 GSO

The patch ensures that a GSO skb has enough headroom
to push an encapsulating cpl_tx_pkt_lso header.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/chelsio/sge.h b/drivers/net/chelsio/sge.h
old mode 100644
new mode 100755
index 713d9c5..285bbb2
--- a/drivers/net/chelsio/sge.h
+++ b/drivers/net/chelsio/sge.h
@@ -64,6 +64,7 @@
 	u64 tx_tso;          /* # of TSO requests */
 	u64 vlan_xtract;     /* # of VLAN tag extractions */
 	u64 vlan_insert;     /* # of VLAN tag insertions */
+	u64 tx_need_hdrroom; /* # of TX skbs in need of more header room */
 };
 
 struct sk_buff;