unexport fb_prepare_logo

The logo code is not and should not be used by modules.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/video/fbmem.c

@@ -1663,7 +1663,6 @@ EXPORT_SYMBOL(register_framebuffer);
 EXPORT_SYMBOL(unregister_framebuffer);
 EXPORT_SYMBOL(num_registered_fb);
 EXPORT_SYMBOL(registered_fb);
-EXPORT_SYMBOL(fb_prepare_logo);
 EXPORT_SYMBOL(fb_show_logo);
 EXPORT_SYMBOL(fb_set_var);
 EXPORT_SYMBOL(fb_blank);