rtc: mt7622: fix module autoloading for OF platform drivers

It's required to create a modules.alias via MODULE_DEVICE_TABLE helper
for the OF platform driver. Otherwise, module autoloading cannot work.
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

drivers/rtc/rtc-mt7622.c

@@ -307,6 +307,7 @@ static const struct of_device_id mtk_rtc_match[] = {
 	{ .compatible = "mediatek,soc-rtc" },
 	{},
 };
+MODULE_DEVICE_TABLE(of, mtk_rtc_match);
 
 static int mtk_rtc_probe(struct platform_device *pdev)
 {