[S] Change in coreboot[master]: Kconfig: Allow mainboards to disable stage cache

[Reka Norman (Code Review)]

Attention is currently required from: Tarun Tuli, Kangheui Won, Reka Norman, Angel Pons, Arthur Heymans.

Hello build bot (Jenkins), Tarun Tuli, Subrata Banik, Kangheui Won, Angel Pons, Arthur Heymans,

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

https://review.coreboot.org/c/coreboot/+/71676

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

Change subject: Kconfig: Allow mainboards to disable stage cache
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Kconfig: Allow mainboards to disable stage cache

On recent Intel ChromeOS devices, although S3 is still supported, only
S0ix is used on user devices, so we don't care about optimising S3
resume time. Disabing the stage cache saves boot time at the cost of
increasing the S3 resume time. E.g. on nissa this reduces boot time by
6 ms and increases S3 resume time by 89 ms.

BUG=b:247940538, b:192032803
TEST=Build and boot on nissa with MAINBOARD_DISABLE_STAGE_CACHE
selected.

Change-Id: I243a401a112a12bb824c5447a8fecc99500f7739
Signed-off-by: Reka Norman 
---
M src/Kconfig
1 file changed, 28 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/76/71676/3