um: vector: switch to netif_napi_add_weight()

UM's netdev driver uses a custom napi weight, switch to the new
API for setting custom weight.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/um/drivers/vector_kern.c

@@ -1255,7 +1255,8 @@ static int vector_net_open(struct net_device *dev)
 			goto out_close;
 	}
 
-	netif_napi_add(vp->dev, &vp->napi, vector_poll, get_depth(vp->parsed));
+	netif_napi_add_weight(vp->dev, &vp->napi, vector_poll,
+			      get_depth(vp->parsed));
 	napi_enable(&vp->napi);
 
 	/* READ IRQ */