OpenEmbedded "poky" with some sysmocom specific modifications. Mostly used only up to sysmocom release 201310, but the "pyro" branch is still used for 201705
Go back to have our own do_configure. The kernel.bbclass would
execute "oldnoconfig" where we simply executed "oldconfig". Keep
on using our old way (for the legacy of it). E.g. with the question
how we ended up having SMP enabled in the BSC build this might
be the answer.