[coreboot-gerrit] Change in coreboot[master]: vboot: update vboot2 functions to use new vb2_error_t

[Joel Kitching (Code Review)]

Joel Kitching has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/34860 )

Change subject: vboot: update vboot2 functions to use new vb2_error_t
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Patch Set 2:
> Patch Set 1:
>
> pgeorgi@: Would it be better if I squashed these two commits?
> I think that may be the only way that we can make Jenkins happy...

I think I figured out how to do this... the previous "Update vboot submodule"
commit now brings vboot to the commit just prior to the one which depends
on this commit.  And this commit just pushes vboot submodule forward by
the one necessary commit.  Jenkins should be happy for both of these patches
now.