OMAP: DSS2: change manual update scaling setup

Currently the update area on manual update displays is automatically
enlargened to fully cover scaled overlays. This patch makes that
optional, allowing the panel driver to choose if it's used or not.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
diff --git a/arch/arm/plat-omap/include/plat/display.h b/arch/arm/plat-omap/include/plat/display.h
index b8de704..8bd15bd 100644
--- a/arch/arm/plat-omap/include/plat/display.h
+++ b/arch/arm/plat-omap/include/plat/display.h
@@ -560,7 +560,8 @@
 int omapdss_dsi_enable_te(struct omap_dss_device *dssdev, bool enable);
 
 int omap_dsi_prepare_update(struct omap_dss_device *dssdev,
-				    u16 *x, u16 *y, u16 *w, u16 *h);
+				    u16 *x, u16 *y, u16 *w, u16 *h,
+				    bool enlarge_update_area);
 int omap_dsi_update(struct omap_dss_device *dssdev,
 		int channel,
 		u16 x, u16 y, u16 w, u16 h,