[S] Change in coreboot[master]: acpi: Add a runtime method to override exposed _Sx sleep states

[Arthur Heymans (Code Review)]

Attention is currently required from: Lance Zhao, Tim Wawrzynczak.

Hello Lance Zhao, Tim Wawrzynczak,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/74762

to look at the new patch set (#3).

Change subject: acpi: Add a runtime method to override exposed _Sx sleep states
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acpi: Add a runtime method to override exposed _Sx sleep states

This allows mainboards to override available sleep states at runtime.
This is done by adding a IntObj in SSDT that DSDT consumes to override
the available _Sx states.

Signed-off-by: Arthur Heymans 
Change-Id: Ic21830c1ef9c183b1e3005cc1f8b7daf7e9ea998
---
M src/acpi/Kconfig
M src/acpi/acpi.c
M src/include/acpi/acpi.h
M src/southbridge/intel/common/acpi/sleepstates.asl
4 files changed, 41 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/62/74762/3