drm/omap: displays: Don't call disconnect handlers directly

In preparation for the move of checks from the disconnect handlers to
the omapdss_device_disconnect() function, replace direct calls to the
disconnect handlers at remove time with calls to
omapdss_device_disconnect().

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

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

@@ -419,7 +419,7 @@ static int td028ttec1_panel_remove(struct spi_device *spi)
 	omapdss_unregister_display(dssdev);
 
 	td028ttec1_panel_disable(dssdev);
-	td028ttec1_panel_disconnect(dssdev);
+	omapdss_device_disconnect(dssdev, NULL);
 
 	return 0;
 }