[Intel-gfx] Small series to enable OpRegion->VBT

Chris Wilson chris at chris-wilson.co.uk
Tue Aug 24 10:42:59 CEST 2010

This looks to be a useful set of patches that enable VBT parsing on
machines with only a compressed VBIOS and so provide fixed-panel modes
for my netbooks. In conjunction with this, I then hit an issue where the
BIOS writers became creative in their use of VBT and so I needed a small
patch to lvds_is_present_in_vbt() to account for the new brain damage.
After Adam's insight, we just accept the VBT without question if it came
from OpRegion.

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