drm/i915: Ignore LVDS on hp t5745 and hp st5747 thin client

commit f5b8a7ed0405d48fd096acce48fbefbed77fb055 upstream.

Add a no_lvds quirk for the HP t5745 and HP st5747 thin clients

dmidecode for those thin clients are attached in thoses bugs:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/911916
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/911920

Signed-off-by: Marc Gariepy <mgariepy@ubuntu.com>
Acked-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[bwh: Backported to 3.2: adjust context because these quirk entries aren't
 consistently cc'd to stable and are now being applied out of order]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>