OMAP: DSS2: move set/get_update_mode()

Move set/get_update_mode() from omap_dss_device to omap_dss_driver.

This is part of a larger patch-set, which moves the control from omapdss
driver to the display driver.

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 fe9601d..c04aadf 100644
--- a/arch/arm/plat-omap/include/plat/display.h
+++ b/arch/arm/plat-omap/include/plat/display.h
@@ -478,11 +478,6 @@
 			       u16 x, u16 y, u16 w, u16 h);
 	int (*sync)(struct omap_dss_device *dssdev);
 
-	int (*set_update_mode)(struct omap_dss_device *dssdev,
-			enum omap_dss_update_mode);
-	enum omap_dss_update_mode (*get_update_mode)
-		(struct omap_dss_device *dssdev);
-
 	int (*set_wss)(struct omap_dss_device *dssdev, u32 wss);
 	u32 (*get_wss)(struct omap_dss_device *dssdev);
 
@@ -507,6 +502,10 @@
 
 	void (*setup_update)(struct omap_dss_device *dssdev,
 			u16 x, u16 y, u16 w, u16 h);
+	int (*set_update_mode)(struct omap_dss_device *dssdev,
+			enum omap_dss_update_mode);
+	enum omap_dss_update_mode (*get_update_mode)(
+			struct omap_dss_device *dssdev);
 
 	int (*enable_te)(struct omap_dss_device *dssdev, bool enable);
 	int (*wait_for_te)(struct omap_dss_device *dssdev);