Change in coreboot[master]: security/vboot/bootmode: Add weak fill_lb_gpios

[Angel Pons (Code Review)]

Attention is currently required from: Raul Rangel, Aaron Durbin.
Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/50341 )

Change subject: security/vboot/bootmode: Add weak fill_lb_gpios
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Patch Set 1: Code-Review+1

(1 comment)

File src/security/vboot/bootmode.c:

https://review.coreboot.org/c/coreboot/+/50341/comment/e6a790b3_22488cce 
PS1, Line 78: }
> void function return statements are not generally useful

I'd remove the `return` statement and leave the function body empty.