Change in coreboot[master]: Linuxboot: add option to parse initramfs

[Marcello Sylvester Bauer (Code Review)]

Marcello Sylvester Bauer has posted comments on this change. ( https://review.coreboot.org/29448 )

Change subject: Linuxboot: add option to parse initramfs
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Patch Set 2:
> That functionality exists in coreboot, it's called Linux payload

It is design to parse a prebuild u-root initramfs in the first place.

I will update the commit message