OMAPDSS: Add DT support to HDMI

Add DT support to HDMI driver. The only thing needed for DT support here
is the of_match_table.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>

drivers/video/omap2/dss/hdmi4.c

@@ -682,6 +682,11 @@ static const struct dev_pm_ops hdmi_pm_ops = {
 	.runtime_resume = hdmi_runtime_resume,
 };
 
+static const struct of_device_id hdmi_of_match[] = {
+	{ .compatible = "ti,omap4-hdmi", },
+	{},
+};
+
 static struct platform_driver omapdss_hdmihw_driver = {
 	.probe		= omapdss_hdmihw_probe,
 	.remove         = __exit_p(omapdss_hdmihw_remove),
@@ -689,6 +694,7 @@ static struct platform_driver omapdss_hdmihw_driver = {
 		.name   = "omapdss_hdmi",
 		.owner  = THIS_MODULE,
 		.pm	= &hdmi_pm_ops,
+		.of_match_table = hdmi_of_match,
 	},
 };