drivers/intel/gma/acpi: Limit OpRegion size

Limit the ACPI OpRegion to cover only MBOX3. This seems to fix
BSOD errors seen on Windows 10/11 as reported at [1].

1: https://ticket.coreboot.org/issues/327

Change-Id: Ia2affa799e5cd84c0a03330e0f78919755f0e8ac
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81295
Reviewed-by: Joel Linn <jl_coreboot@conductive.de>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>

0 files changed, 0 insertions, 0 deletions