[M] Change in flashrom[master]: writeprotect: Add function to get register values and WP bit masks

[Nikolai Artemiev (Code Review)]

Attention is currently required from: Edward O'Callaghan, Anastasia Klimchuk, Sergii Dmytruk.

Nikolai Artemiev has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/69847 )

Change subject: writeprotect: Add function to get register values and WP bit masks
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Patch Set 8:

(3 comments)

This change is ready for review.

Commit Message:

https://review.coreboot.org/c/flashrom/+/69847/comment/9b51163e_7656cb26 
PS5, Line 7: writeprotect: Add function to get register values and WP bit masks
> Is this to allow updating WP registers via some non-standard method?  Would be nice to have outline  […]

It will allow us to more thoroughly qualify flash chips once flashrom_tester is able to query the register values during testing. I've uploaded a WIP commit to add a libflashrom interface as well in CB:73053.

File tests/chip_wp.c:

https://review.coreboot.org/c/flashrom/+/69847/comment/4e669625_91f5162f 
PS5, Line 363:  strdup(
> you do not need a heap allocation, just a `const char *`

Done

https://review.coreboot.org/c/flashrom/+/69847/comment/1020316e_60eb7497 
PS5, Line 396: free(param_dup);
> drop

Done