Change in coreboot[master]: Documentation/gerrit: Document our Gerrit user roles and procedures

[Angel Pons (Code Review)]

Attention is currently required from: Paul Menzel, Stefan Reinauer, Jan Dabros.
Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/52265 )

Change subject: Documentation/gerrit: Document our Gerrit user roles and procedures
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Patch Set 5: Code-Review+1

(2 comments)

File Documentation/getting_started/gerrit_guidelines.md:

https://review.coreboot.org/c/coreboot/+/52265/comment/c5ae85ae_a8437912 
PS2, Line 347: by themselves or others,
             : at the regular [coreboot leadership meetings](../community/forums.md)
             : where a decision is made.
> The idea behind this is to provide some checks & balances, otherwise we might at some point have bla […]

I think it's a reasonable approach. It's not like the core developer list gets updated too often. Plus, considering that the privileges of the core developers group can easily be abused, having a general consensus and a record (meeting minutes) for new additions to this group is a good idea.

File Documentation/getting_started/gerrit_guidelines.md:

https://review.coreboot.org/c/coreboot/+/52265/comment/738dde6f_b1e78c52 
PS5, Line 329: -1
I thought registered users could also -1 changes?