[M] Change in flashrom[main]: libflashrom: Update the API for progress callback

[Sergii Dmytruk (Code Review)]

Attention is currently required from: Anastasia Klimchuk, Peter Marheine, Richard Hughes.

Sergii Dmytruk has posted comments on this change by Anastasia Klimchuk. ( https://review.coreboot.org/c/flashrom/+/86031?usp=email )

Change subject: libflashrom: Update the API for progress callback
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Patch Set 3:

(1 comment)

File include/libflashrom.h:

https://review.coreboot.org/c/flashrom/+/86031/comment/df710d3f_8e12c9ac?usp... :
PS2, Line 90:  * @deprecated Use flashrom_set_progress_callback_v1 instead
> There is an important detail here, I will try to explain the full context. […]

The old version was usable but required global state.  Client code was responsible for managing progress state and passed it into libflashrom, which then didn't return the pointer in the callback, but the client knew its value and could display progress.