[coreboot-gerrit] [M] Change in coreboot[main]: 3rdparty/open-power-signing-utils: add SecureBoot utility for OpenPOWER

[Krystian Hebel (Code Review)]

Attention is currently required from: Arthur Heymans, Sergii Dmytruk.

Krystian Hebel has posted comments on this change by Sergii Dmytruk. ( https://review.coreboot.org/c/coreboot/+/67065?usp=email )

Change subject: 3rdparty/open-power-signing-utils: add SecureBoot utility for OpenPOWER
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Patch Set 38: Code-Review-1

(1 comment)

Patchset:

PS38: 
Talos II firmware enabled secure boot in 2.10 by default [1],
so this will no longer be enough. Created image should be signed
with all 3 HW keys as well as the OS key.

[1] https://wiki.raptorcs.com/wiki/Talos_II/Firmware/2.10/Release_Notes