[coreboot-gerrit] Change in coreboot[master]: mb/google/brya: Create primus variant

[Tim Wawrzynczak (Code Review)]

Attention is currently required from: Furquan Shaikh, Paul Menzel, Scott Chao.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/54941 )

Change subject: mb/google/brya: Create primus variant
......................................................................

Patch Set 4: Code-Review+1

(1 comment)

Patchset:

PS4: 
Do you mind rebasing on top of CB:55021