Let abuild work from config files instead of deriving everything by itself
|Assignee:||Martin Roth||% Done:|
This allows adding multiple build variants for a single board, eg. with/without native video init, fsp1.1/fsp2, ...
Things to keep in mind:
* The builds need a distinct label for their build directories and test results
* abuild needs to check that all boards had at least one build (eg. by "crossing off" a list of boards it generates), so we don't miss boards by accident