[flashrom-gerrit] Change in flashrom[master]: ichspi: Add Alder Lake support

[Sam McNally (Code Review)]

Attention is currently required from: Nico Huber, Rizwan Qureshi, Edward O'Callaghan, Angel Pons.
Sam McNally has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/62251 )

Change subject: ichspi: Add Alder Lake support
......................................................................

Patch Set 12:

(2 comments)

Commit Message:

https://review.coreboot.org/c/flashrom/+/62251/comment/f2e4b91c_1b362f84 
PS12, Line 12: TEST=```localhost ~ # flashrom --flash-name
> > This tests the changes to `guess_ich_chipset_from_content()`, please check the flashrom log to ver […]

Thanks for that detail.

With Nivviks/ADL-N and Brya/ADL-P:
```
Reading ich descriptor... Reading 4096 bytes starting at 0x000000.
done.
Assuming chipset '600 series Alder Point'.
Added layout entry 00000000 - 00000fff named fd
Added layout entry 00500000 - 01ffffff named bios
Added layout entry 00001000 - 004fffff named me
```

File ich_descriptors.c:

https://review.coreboot.org/c/flashrom/+/62251/comment/eddcfd4c_5ad9d2ee 
PS12, Line 307: 	case CHIPSET_600_SERIES_ALDER_POINT:
> Looking at the ADL-P SPI Guide Rev. 1.24, it shows the same numbers as […]

From the values available in the FIT tool, I think you're right.