Change in coreboot[master]: amdfwtool: Add ISH header support for A/B recovery layout

[Bao Zheng (Code Review)]

Attention is currently required from: Jason Glenesk, Raul Rangel, Martin Roth, Marshall Dawson, Zheng Bao, Felix Held.
Hello build bot (Jenkins), Jason Glenesk, Martin Roth, Marshall Dawson, Zheng Bao, Felix Held,

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

https://review.coreboot.org/c/coreboot/+/57747

to look at the new patch set (#58).

Change subject: amdfwtool: Add ISH header support for A/B recovery layout
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amdfwtool: Add ISH header support for A/B recovery layout

Image Slot Header (ISH) is a new feature.
The rom layout for A/B recovery with ISH:
EFS -> PSP L1 0x48 -> ISH A -> PSP L2 A -> BIOS L2 A
              0x4A -> ISH B -> PSP L2 B -> BIOS L2 B

The newer 55758 will updated about the boot priority and update retry
in ISH header.

Change-Id: Ib0690cde1dce949514c7aacebe13096b7814ceff
Signed-off-by: Zheng Bao 
---
M util/amdfwtool/Makefile
M util/amdfwtool/Makefile.inc
M util/amdfwtool/amdfwtool.c
M util/amdfwtool/amdfwtool.h
4 files changed, 64 insertions(+), 12 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/47/57747/58