[S] Change in coreboot[master]: util/ifdtool: Add Wellsburg support

[Patrick Rudolph (Code Review)]

Attention is currently required from: Stefan Reinauer, Angel Pons.

Hello build bot (Jenkins), Stefan Reinauer, Lean Sheng Tan,

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

https://review.coreboot.org/c/coreboot/+/68657

to look at the new patch set (#3).

Change subject: util/ifdtool: Add Wellsburg support
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util/ifdtool: Add Wellsburg support

Wellsburg is IFDv2 compatible and supports up to 6 regions.

Also add support using the -p argument to specify Wellsburg platform.

Make sure to not use 16 regions as default as this corrupts the image
when using the layout modification feature.

Tested on Intel Grangeville.

Documents used:
Intel Document Id: 516552
Intel Document Id: 565117

Change-Id: I651730b05deb512478d059174cf8615547d2fde4
Signed-off-by: Patrick Rudolph 
Co-developed-by: Julian Elischer 
---
M util/ifdtool/ifdtool.c
M util/ifdtool/ifdtool.h
2 files changed, 37 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/57/68657/3