Change in coreboot[master]: src/lib: Add FW_CONFIG_SOURCE_VPD

[Wonkyu Kim (Code Review)]

Attention is currently required from: Jamie Ryu, Wonkyu Kim, Ravishankar Sarawadi, Julius Werner, Subrata Banik, Nick Vaccaro, Srinidhi N Kaushik, Raj Astekar.
Hello build bot (Jenkins), Jamie Ryu, Ravishankar Sarawadi, Tim Wawrzynczak, Julius Werner, Subrata Banik, Nick Vaccaro, Srinidhi N Kaushik, Raj Astekar,

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

https://review.coreboot.org/c/coreboot/+/58839

to look at the new patch set (#11).

Change subject: src/lib: Add FW_CONFIG_SOURCE_VPD
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src/lib: Add FW_CONFIG_SOURCE_VPD

Read fw_config value from VPD.
This new option can be used where chrome EC is not supported like
pre-silicon platform and fw_config can be updated by VPD tool in OS.

TEST= boot to OS and read fw_config from vpd
1. Boot to OS
2. Write "fw_config" in VPD
   ex) vpd -i "RW_VPD" -s "fw_config"="1"
3. reboot and check fw_config value from coreboot log

Signed-off-by: Wonkyu Kim 
Change-Id: I4df7d5612e18957416a40ab854fa63c8b11b4216
---
M src/Kconfig
M src/lib/fw_config.c
2 files changed, 22 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/39/58839/11