[S] Change in coreboot[main]: src/lib: Add Kconfig variable for fw_config default value

[Cliff Huang (Code Review)]

Attention is currently required from: Anil Kumar K, Bora Guvendik, Julius Werner, Jérémy Compostella, Subrata Banik, Wonkyu Kim.

Hello Anil Kumar K, Bora Guvendik, Jérémy Compostella, Subrata Banik, Wonkyu Kim, build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/83153?usp=email

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

The following approvals got outdated and were removed:
Code-Review+1 by Jérémy Compostella, Verified-1 by build bot (Jenkins)

Change subject: src/lib: Add Kconfig variable for fw_config default value
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src/lib: Add Kconfig variable for fw_config default value

This CONFIG_FW_CONFIG_DEFAULT_VALUE flag is default to
UNDEFINED_FW_CONFIG and won't be used when retrieving fw_config
value. Set this with different value in config.<board> file, and
it will be used when fw_config is not able to read via Chrome EC,
CBFS or VPD.

TEST=boot and check fw_config value from coreboot log

Signed-off-by: Cliff Huang 
Change-Id: I9694433e01bdcd9ff1e550585c14ea7ccee020a3
---
M src/Kconfig
M src/lib/fw_config.c
2 files changed, 15 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/53/83153/3