qlcnic: Set skb->csum_level for encapsulated checksum

Set skb->csum_level instead of skb->encapsulation when indicating
CHECKSUM_UNNECESSARY for an encapsulated checksum.

Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c

@@ -1753,7 +1753,7 @@ qlcnic_83xx_process_rcv(struct qlcnic_adapter *adapter,
 
 	if (qlcnic_encap_length(sts_data[1]) &&
 	    skb->ip_summed == CHECKSUM_UNNECESSARY) {
-		skb->encapsulation = 1;
+		skb->csum_level = 1;
 		adapter->stats.encap_rx_csummed++;
 	}