[S] Change in flashrom[main]: ichspi: Add RaptorPoint PCH support

[Anastasia Klimchuk (Code Review)]

Attention is currently required from: Krystian Hebel, Maciej Pijanowski, Michał Kopeć, Michał Żygowski, Sergii Dmytruk.

Anastasia Klimchuk has posted comments on this change by Maciej Pijanowski. ( https://review.coreboot.org/c/flashrom/+/83854?usp=email )

Change subject: ichspi: Add RaptorPoint PCH support
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Patch Set 8: Code-Review+2

(1 comment)

Commit Message:

https://review.coreboot.org/c/flashrom/+/83854/comment/f3ea7566_efdb9f9c?usp... :
PS5, Line 10: 
            : The IDs of IoT chipset SKUs (ending with E) can only be found in "12th Gen Intel® Core™ Processors Family (Formerly Known as Alder Lake -S) for IoT Platforms External Design Specification (EDS) Addendum" DOC 634528 rev 2.7 (NDA).
            : 
            : TEST=Probe flash on Z790 chipset. Run the ich_descriptors_tool and check output is correct as expected.
> Sorry, my laziness came out and I edited it in gerrit UI 😊 Corrected

Done