Change in coreboot[master]: src: Drop unused Kconfig symbols

[Elyes Haouas (Code Review)]

Attention is currently required from: Lance Zhao, Paul Menzel, Tim Wawrzynczak, Arthur Heymans, Patrick Rudolph, Felix Held.
Elyes Haouas has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/62362 )

Change subject: src: Drop unused Kconfig symbols
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Patch Set 8:

(3 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/62362/comment/2abac52a_a6bb1f38 
PS7, Line 7: treewide
> Just use `src`?

Done

https://review.coreboot.org/c/coreboot/+/62362/comment/944b8e48_939b306f 
PS7, Line 8:
> If easily doable, maybe list all the symbols in the body.

Done

https://review.coreboot.org/c/coreboot/+/62362/comment/a429a9b0_e169a8cf 
PS7, Line 11: Signed-off-by: Elyes Haouas
> Signing of once should be enough. […]

Done