sctp: Rename NETIF_F_SCTP_CSUM to NETIF_F_SCTP_CRC

The SCTP checksum is really a CRC and is very different from the
standards 1's complement checksum that serves as the checksum
for IP protocols. This offload interface is also very different.
Rename NETIF_F_SCTP_CSUM to NETIF_F_SCTP_CRC to highlight these
differences. The term CSUM should be reserved in the stack to refer
to the standard 1's complement IP checksum.

Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 7afde45..31e5f39 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -2379,8 +2379,8 @@
 	}
 
 	if (hw->mac.type >= e1000_82576) {
-		netdev->hw_features |= NETIF_F_SCTP_CSUM;
-		netdev->features |= NETIF_F_SCTP_CSUM;
+		netdev->hw_features |= NETIF_F_SCTP_CRC;
+		netdev->features |= NETIF_F_SCTP_CRC;
 	}
 
 	netdev->priv_flags |= IFF_UNICAST_FLT;