video: fbdev: cirrusfb: Make cirrusfb_zorro_unregister() static

cirrusfb_zorro_unregister() is only used locally, hence make it static.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Helge Deller <deller@gmx.de>

drivers/video/fbdev/cirrusfb.c

@@ -2301,7 +2301,7 @@ static int cirrusfb_zorro_register(struct zorro_dev *z,
 	return error;
 }
 
-void cirrusfb_zorro_unregister(struct zorro_dev *z)
+static void cirrusfb_zorro_unregister(struct zorro_dev *z)
 {
 	struct fb_info *info = zorro_get_drvdata(z);