[S] Change in coreboot[master]: mb/google/rex: Disable `ACPI PM timer`

[Subrata Banik (Code Review)]

Attention is currently required from: Tarun Tuli, Subrata Banik.

Hello build bot (Jenkins), Tarun Tuli, Kapil Porwal,

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

https://review.coreboot.org/c/coreboot/+/69685

to look at the new patch set (#2).

Change subject: mb/google/rex: Disable `ACPI PM timer`
......................................................................

mb/google/rex: Disable `ACPI PM timer`

This patch deselects `USE_PM_ACPI_TIMER` kconfig to ensure that
ACPI PM timer remains disabled.

The PM timer (by PMC IP) consumes more power and blocks S0ix so the
timer is emulated by ucode to save power and unblock S0ix.

TEST=Able to boot Google, Rex and ensure PMC MMIO register 0x18fc
BIT 1 is set.

Signed-off-by: Subrata Banik 
Change-Id: I2a23b417ff7fb6328323380a7df46b4b397fc8eb
---
M src/mainboard/google/rex/Kconfig
1 file changed, 22 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/85/69685/2