PCI: mediatek-gen3: Add missing MODULE_DEVICE_TABLE

This patch adds missing MODULE_DEVICE_TABLE definition which generates
correct modalias for automatic loading of this driver when it is built
as an external module.

Link: https://lore.kernel.org/r/1620717091-108691-1-git-send-email-zou_wei@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Krzysztof Wilczyński <kw@linux.com>

Author: Zou Wei

drivers/pci/controller/pcie-mediatek-gen3.c

@@ -1012,6 +1012,7 @@ static const struct of_device_id mtk_pcie_of_match[] = {
 	{ .compatible = "mediatek,mt8192-pcie" },
 	{},
 };
+MODULE_DEVICE_TABLE(of, mtk_pcie_of_match);
 
 static struct platform_driver mtk_pcie_driver = {
 	.probe = mtk_pcie_probe,