gma: Consolidate Intel IGD ACPI code some more

Consolidate some common (and mostly broken) code. Will try to fix things
in separate commits.

Maybe, igd.asl taken from gm45 (the non-PCH case) could also be used for
i945 and sch. But this needs further investigation.

Change-Id: Id3663bf588458e1e71920b96a3149f96947921e9
Signed-off-by: Nico Huber <>
Reviewed-by: Vladimir Serbinenko <>
Tested-by: build bot (Jenkins)
11 files changed