[coreboot-gerrit] Change in coreboot[master]: lib/future: Implement Futures API

[Eric Peers (Code Review)]

Attention is currently required from: Raul Rangel, Aaron Durbin, Furquan Shaikh, Marshall Dawson, Julius Werner.
Eric Peers has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/56048 )

Change subject: lib/future: Implement Futures API
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Patch Set 2:

(1 comment)

File src/lib/future.c:

https://review.coreboot.org/c/coreboot/+/56048/comment/028e9f35_9f4caffd 
PS2, Line 14: static struct future *futures[8];
you never init this to NULL but count on it being null. Is this because we 0 out memory? Is it better to 0 it out explicitly?