mailbox: mtk-cmdq-mailbox: fix module autoloading

Add MODULE_DEVICE_TABLE(), so this module could be properly autoloaded
based on the alias from of_device_id table.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>

drivers/mailbox/mtk-cmdq-mailbox.c

@@ -765,6 +765,7 @@ static const struct of_device_id cmdq_of_ids[] = {
 	{.compatible = "mediatek,mt8195-gce", .data = (void *)&gce_plat_mt8195},
 	{}
 };
+MODULE_DEVICE_TABLE(of, cmdq_of_ids);
 
 static struct platform_driver cmdq_drv = {
 	.probe = cmdq_probe,