soc/intel/broadwell: Set FADT `duty_offset` to 0

From ACPI specification, version 6.2 Errata A:

 A `duty_width` value of 0 indicates that processor duty cycle is not
 supported and the processor continuously runs at its base frequency.

Because Broadwell sets `duty_width` to 0, processor duty cycle is not
supported, and the value of `duty_offset` is ignored. For consistency
with Lynx Point, set `duty_offset` to 0.

Change-Id: I68cb85ec32a6cceda0cea29d76df6c6219b78a40
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57493
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>

0 files changed, 0 insertions, 0 deletions