OMAPDSS: HDMI5: disable interlace modes

We don't support interlace modes properly on OMAP5+ HDMI, so we need to
reject interlace timings.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/video/fbdev/omap2/dss/hdmi5.c

@@ -290,6 +290,10 @@ static int hdmi_display_check_timing(struct omap_dss_device *dssdev,
 {
 	struct omap_dss_device *out = &hdmi.output;
 
+	/* TODO: proper interlace support */
+	if (timings->interlace)
+		return -EINVAL;
+
 	if (!dispc_mgr_timings_ok(out->dispc_channel, timings))
 		return -EINVAL;