OMAPDSS: HDMI: fix interlace output

The HDMI output video format's yres needs to be divided by two for
interlace. Fix it.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

drivers/video/omap2/dss/hdmi_wp.c

@@ -171,6 +171,8 @@ void hdmi_wp_init_vid_fmt_timings(struct hdmi_video_format *video_fmt,
 	video_fmt->packing_mode = HDMI_PACK_10b_RGB_YUV444;
 	video_fmt->y_res = param->timings.y_res;
 	video_fmt->x_res = param->timings.x_res;
+	if (param->timings.interlace)
+		video_fmt->y_res /= 2;
 
 	timings->hbp = param->timings.hbp;
 	timings->hfp = param->timings.hfp;