drivers: net: generalize napi_complete_done()

napi_complete_done() allows to opt-in for gro_flush_timeout,
added back in linux-3.19, commit 3b47d30396ba
("net: gro: add a per device gro flush timer")

This allows for more efficient GRO aggregation without
sacrifying latencies.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/nxp/lpc_eth.c b/drivers/net/ethernet/nxp/lpc_eth.c
index dd6b0d0..9c7ffd6 100644
--- a/drivers/net/ethernet/nxp/lpc_eth.c
+++ b/drivers/net/ethernet/nxp/lpc_eth.c
@@ -999,7 +999,7 @@ static int lpc_eth_poll(struct napi_struct *napi, int budget)
 	rx_done = __lpc_handle_recv(ndev, budget);
 
 	if (rx_done < budget) {
-		napi_complete(napi);
+		napi_complete_done(napi, rx_done);
 		lpc_eth_enable_int(pldat->net_base);
 	}