gpu/drm/i915: Add a blacklist to omit modeset on LID open

On some machines (currently only the Toshiba Tecra A11 is known), the GPU
locks up when modeset is forced on LID open. This patch adds a new DMI
blacklist and omits modesetting for all matches.

Fixes https://bugzilla.kernel.org/show_bug.cgi?id=15550



Signed-off-by: Thomas Bächler <thomas@archlinux.org>
Signed-off-by: Eric Anholt <eric@anholt.net>