Change in flashrom[master]: spi25_statusreg,flashchips: add SR2 read/write support

[Nikolai Artemiev (Code Review)]

Attention is currently required from: Nico Huber, Angel Pons, Anastasia Klimchuk, Sergii Dmytruk.
Nikolai Artemiev has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/58570 )

Change subject: spi25_statusreg,flashchips: add SR2 read/write support
......................................................................

Patch Set 24:

(3 comments)

File flashchips.c:

https://review.coreboot.org/c/flashrom/+/58570/comment/f0312092_2cdbb77a 
PS18, Line 6711: FEATURE_WRSR_EXT
> > And a comment about the datasheet oddity would be nice. […]

I just added it as a comment at the end of the line, that seems to be fairly standard for flashchips.c.

File spi25_statusreg.c:

https://review.coreboot.org/c/flashrom/+/58570/comment/b2e85df1_4d1f47f0 
PS23, Line 94:
> A bright pink space :)

Done

https://review.coreboot.org/c/flashrom/+/58570/comment/9b22900c_7c880664 
PS23, Line 116: *
> This can be removed (you have two asterisks).

Done