Change in flashrom[master]: libflashrom,writeprotect: add flashrom_wp_{read,write}_chip_config()

[Anastasia Klimchuk (Code Review)]

Attention is currently required from: Nico Huber, Edward O'Callaghan, Nikolai Artemiev, Sergii Dmytruk.
Anastasia Klimchuk has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/58479 )

Change subject: libflashrom,writeprotect: add flashrom_wp_{read,write}_chip_config()
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Patch Set 23:

(1 comment)

File writeprotect.c:

https://review.coreboot.org/c/flashrom/+/58479/comment/000717cd_430ae0a4 
PS22, Line 122: INVALID_REG
> I've changed it to (INVALID_REG + 1), perhaps STATUS1 would be better though. […]

IMO it is a bit confusing when loop starts with "invalid" value. And even when it's "invalid" + 1 , it takes time to understand why this is fine. I would vote for STATUS1, then it reads naturally like "start with 1 and loop until max value".