drm/omap: omap_display_timings: rename x_res to hactive

In preparation to move the stack to use the generic videmode struct for
display timing information rename the x_res member to hactive.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c

@@ -43,7 +43,7 @@ struct panel_drv_data {
 };
 
 static struct omap_video_timings td028ttec1_panel_timings = {
-	.x_res		= 480,
+	.hactive	= 480,
 	.y_res		= 640,
 	.pixelclock	= 22153000,
 	.hfp		= 24,