OMAP: DSS2: OMAPFB: Add omapfb_update_window prototype

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>

drivers/video/omap2/omapfb/omapfb.h

@@ -105,6 +105,9 @@ void omapfb_remove_sysfs(struct omapfb2_device *fbdev);
 
 int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg);
 
+int omapfb_update_window(struct fb_info *fbi,
+		u32 x, u32 y, u32 w, u32 h);
+
 int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
 			struct fb_var_screeninfo *var);