[S] Change in coreboot[master]: mainboard/google/rex/Kconfig: Enable EC boot timestamps for mtl-rex

[Jay Patel (Code Review)]

Attention is currently required from: Bora Guvendik, Hannah Williams, Tarun Tuli, Jamie Ryu, Wonkyu Kim, Paul Menzel, Kapil Porwal.

Hello Bora Guvendik, build bot (Jenkins), Hannah Williams, Tarun Tuli, Jamie Ryu, Subrata Banik, Wonkyu Kim, Kapil Porwal,

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

https://review.coreboot.org/c/coreboot/+/73192

to look at the new patch set (#9).

Change subject: mainboard/google/rex/Kconfig: Enable EC boot timestamps for mtl-rex
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mainboard/google/rex/Kconfig: Enable EC boot timestamps for mtl-rex

Enables feature to record pre-reset boot time using EC boot timestamps.

Additional patch required in EC to enable the feature:
https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/4263103

In EC, it is also required to enable the feature in program config
file using SYSTEM_BOOT_TIME_LOGGING flag.

BUG=b:271012752
TEST=Pre-reset boot timestamps added to the timestamp table, verified
     using cbmem -t

Signed-off-by: Jay Patel 
Change-Id: Id0b773fb4c7abfcb3c3ab061d970327987536fb2
---
M src/mainboard/google/rex/Kconfig
1 file changed, 23 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/92/73192/9