Interfaces changed to lrt::config, *fdt added to EbbRT instance

Interface required to fdt reference pass as the first argument. Fdt is
available in the ebbrt instance class, or as a global const in baremetal.
Fix PrimEbbManager to reference fdt
Misses & ebb calls working on both ulnx/bare w/ configuration

Linux app requires the path to fdt BINARY passed to EbbRT instance on
construction