usb: xhci-mtk: drop CONFIG_OF

The driver can match only the devices created by the OF core
via the DT table, so the table should be always used.
Signed-off-by: NChunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1616482975-17841-8-git-send-email-chunfeng.yun@mediatek.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/xhci-mtk.c

@@ -678,14 +678,12 @@ static const struct dev_pm_ops xhci_mtk_pm_ops = {
 };
 #define DEV_PM_OPS IS_ENABLED(CONFIG_PM) ? &xhci_mtk_pm_ops : NULL
 
-#ifdef CONFIG_OF
 static const struct of_device_id mtk_xhci_of_match[] = {
 	{ .compatible = "mediatek,mt8173-xhci"},
 	{ .compatible = "mediatek,mtk-xhci"},
 	{ },
 };
 MODULE_DEVICE_TABLE(of, mtk_xhci_of_match);
-#endif
 
 static struct platform_driver mtk_xhci_driver = {
 	.probe	= xhci_mtk_probe,
@@ -693,7 +691,7 @@ static struct platform_driver mtk_xhci_driver = {
 	.driver	= {
 		.name = "xhci-mtk",
 		.pm = DEV_PM_OPS,
-		.of_match_table = of_match_ptr(mtk_xhci_of_match),
+		.of_match_table = mtk_xhci_of_match,
 	},
 };
 MODULE_ALIAS("platform:xhci-mtk");