Single Image Boot

When having some issues bringing up a new board using an A10 I encountered the article. Single Image boot

A lot of effort seems to be put in to create an overly complex construction to be able to boot multiple completetely different boards using a single image. Maybe nice for Intel, but I doubt if this will be used for a real life situation.

Better provide better mainline u-boot support, which at least for the Arria10 seems still problematic.