investigating a bit with intelmetool and mecleaner non of them could
found any sign for an ME-region in this board.. so i asking myself if
there is no ME/SPS on the intel C2000 socs, what would make them a DAMN
SEXY platform to port coreboot too.

I believe that the Intel FSP (firmware support package) has Coreboot support for c2000 for many years, though it has never been upstreamed.