net: ethernet: mtk-star-emac: modify IRQ trigger flags

If the flags in request_irq() is IRQF_TRIGGER_NONE, the trigger method
is determined by "interrupt" property in dts.
So, modify the flag from IRQF_TRIGGER_FALLING to IRQF_TRIGGER_NONE.
Signed-off-by: NBiao Huang <biao.huang@mediatek.com>
Signed-off-by: NYinghua Pan <ot_yinghua.pan@mediatek.com>
Reviewed-by: NBartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/mediatek/mtk_star_emac.c

@@ -958,7 +958,7 @@ static int mtk_star_enable(struct net_device *ndev)
 
 	/* Request the interrupt */
 	ret = request_irq(ndev->irq, mtk_star_handle_irq,
-			  IRQF_TRIGGER_FALLING, ndev->name, ndev);
+			  IRQF_TRIGGER_NONE, ndev->name, ndev);
 	if (ret)
 		goto err_free_skbs;