[S] Change in flashrom[main]: doc: Add doc for supported flash chips

[Alexander Goncharov (Code Review)]

Attention is currently required from: Anastasia Klimchuk, Thomas Heijligen, Victor Lim.

Alexander Goncharov has posted comments on this change by Anastasia Klimchuk. ( https://review.coreboot.org/c/flashrom/+/82197?usp=email )

Change subject: doc: Add doc for supported flash chips
......................................................................

Patch Set 3: Code-Review+2

(1 comment)

File doc/supported_hw/supported_flashchips.rst:

https://review.coreboot.org/c/flashrom/+/82197/comment/f985c3ef_1799ac81?usp... :
PS2, Line 14: If you want to check whether a flash chip is supported in the given release, you can rebase your local
            : repo at the release tag, alternatively select a tag/branch in GitHub web UI (dropdown on the top-left).
> I don't want to have *another* list of supported chips, I think there should be one canonical list i […]

Valid point!