Change in flashrom[master]: libflashrom,writeprotect: add flashrom_wp_set_range()

[Nikolai Artemiev (Code Review)]

Attention is currently required from: Nico Huber, Paul Menzel, Edward O'Callaghan, Angel Pons, Anastasia Klimchuk, Sergii Dmytruk.
Nikolai Artemiev has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/58482 )

Change subject: libflashrom,writeprotect: add flashrom_wp_set_range()
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Patch Set 9:

(1 comment)

Patchset:

PS6:
> +1 to getting the right abstraction from the beginning, libflashrom entry-points is certainly that w […]

Thanks Nico and Edward for the points above. I've gone through the writeprotect code and deleted anything that assumed it was being called from a CLI environment, i.e. it doesn't print any errors to stderr now.

That also required breaking up some functions into smaller operations, which I think is generally better. All writeprotect functions are now exposed through libflashrom.h.

As for splitting off a new CLI binary, I've factored out most of the WP related CLI code into a separate function (wp_cli() in review.coreboot.org/c/flashrom/+/58738/3), so it will be pretty easy to move everything. For now though maybe we can leave it in cli_classic while we finish off the core WP functionality?