[flashrom-gerrit] Change in flashrom[master]: flashchips: Add Puya P25Q21H

[WereCatf (Code Review)]

Attention is currently required from:  Felix Singer.
WereCatf has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/58134 )

Change subject: flashchips: Add Puya P25Q21H
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Patch Set 2:

(2 comments)

Commit Message:

https://review.coreboot.org/c/flashrom/+/58134/comment/2d3f4227_06fbe44f 
PS1, Line 8:
> Please add a link to the datasheet and explain how you tested it.

Done

Patchset:

PS2: 
The chip is apparently actually called P25Q21H, despite the markings on it saying P25D21H, so I changed that. Also, I did add the requested changes to the commit-message.