Change in flashrom[master]: ichspi: Add support for Meteor Lake

[Subrata Banik (Code Review)]

Attention is currently required from: Wonkyu Kim, Edward O'Callaghan, Anastasia Klimchuk.
Hello build bot (Jenkins), Wonkyu Kim, Edward O'Callaghan, Angel Pons, Anastasia Klimchuk,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/flashrom/+/62783

to look at the new patch set (#4).

Change subject: ichspi: Add support for Meteor Lake
......................................................................

ichspi: Add support for Meteor Lake

This patch adds Meteor Lake support into flashrom.

Additionally, utilize CSSO (CPU Soft Strap Offset) to uniquely detect
the chipset when the CSSL (CPU Soft Strap Length) field default value
(0x03) on Meteor Lake is the same as Elkhart Lake.

BUG=b:224325352
TEST=Flashrom is able to detect MTL SPI DID and show chipset name as below:
> flashrom --flash-name

....
Found chipset "Intel Meteor Lake-P/M".
....
> flashrom - internal --ifd -i fd -i bios -r /tmp/bios.rom

....
Reading ich_descriptor... done.
Assuming chipset 'Meteor Lake'.
Using regions: "bios", "fd".
Reading flash... done.
SUCCESS

Signed-off-by: Subrata Banik 
Change-Id: I0a2ffe2ba8d96c90d89b77e0d8583d179ff02a75
---
M chipset_enable.c
M ich_descriptors.c
M ichspi.c
M programmer.h
M util/ich_descriptors_tool/ich_descriptors_tool.c
5 files changed, 38 insertions(+), 6 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/83/62783/4