Change in coreboot[master]: mb/google/volteer/variant/lindar: Enable SA GV setting

[Kevin Chang (Code Review)]

Attention is currently required from: Caveh Jalali, Paul Menzel, Tim Wawrzynczak, Derek Huang, Zhuohao Lee.
Kevin Chang has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/49636 )

Change subject: mb/google/volteer/variant/lindar: Enable SA GV setting
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Patch Set 3:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/49636/comment/e47e9649_7ebba7f3 
PS1, Line 7: mb/google/volteer/variant/lindar: Enable SaGv setting in Lindar
> Lindar is already in the prefix […]

Done

https://review.coreboot.org/c/coreboot/+/49636/comment/979b59c7_0fb2ecf5 
PS1, Line 9: Allow MRC training in SaGv.
> No idea, what *GV* means in: […]

Hi Paul

Reply question 1, this setting is disable by who already leave LCFC, and this guy is following malefor setting to program our project.

Reply question 2, Yes, this setting is enable in baseboard devicetree.