[PATCH] intelfb: Add voffset option to avoid conficts with Xorg i810 driver

- Add voffset option to avoid conficts with Xorg i810 driver

Signed-off-by: Sylvain Meyer <sylvain.meyer@worldonline.fr>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>