net: macb: use NAPI_POLL_WEIGHT

Use NAPI_POLL_WEIGHT, the default NAPI poll() weight instead of
redefining our own value (which turns out to be 64 as well).
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/cadence/macb_main.c

@@ -3487,7 +3487,7 @@ static int macb_init(struct platform_device *pdev)
 
 		queue = &bp->queues[q];
 		queue->bp = bp;
-		netif_napi_add(dev, &queue->napi, macb_poll, 64);
+		netif_napi_add(dev, &queue->napi, macb_poll, NAPI_POLL_WEIGHT);
 		if (hw_q) {
 			queue->ISR  = GEM_ISR(hw_q - 1);
 			queue->IER  = GEM_IER(hw_q - 1);