niu: Enable GRO by default.

This was merely an oversight when I added the napi_gro_receive()
calls.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/niu.c b/drivers/net/niu.c
index ef94022..493e25c 100644
--- a/drivers/net/niu.c
+++ b/drivers/net/niu.c
@@ -9838,7 +9838,7 @@
 		}
 	}
 
-	dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM);
+	dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_GRO);
 
 	np->regs = pci_ioremap_bar(pdev, 0);
 	if (!np->regs) {