Migrate opregion code from northbridge/intel/common to
drivers/intel/gma in preparation for consolidation with
soc/intel/common opregion code. Rename init_igd_opregion()
for clarity and disambiguation with other implementations.
Change-Id: I2d0bae98f04dbe7e896ca34e15f24d29b6aa2ed6
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/20582
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
ebe08e0ee3