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

[Michał Żygowski (Code Review)]

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

Michał Żygowski has uploaded a new patch set (#8) to the change originally created by Maciej Pijanowski. ( https://review.coreboot.org/c/flashrom/+/83854?usp=email )

Change subject: ichspi: Add RaptorPoint PCH support
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ichspi: Add RaptorPoint PCH support

Based on public Intel 700 Series PCH datasheet, DOC 743835 rev 004.

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 the output is correct as expected.

Change-Id: I13ac52d5400c0e2260e12d605077fc2182c379ef
Signed-off-by: Michał Żygowski 
---
M chipset_enable.c
M doc/release_notes/devel.rst
M ich_descriptors.c
M ichspi.c
M include/programmer.h
M util/ich_descriptors_tool/ich_descriptors_tool.c
6 files changed, 45 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/54/83854/8