openssd: remove deferred logic for submit bio again

Didn't have a need for knowing a bio was resubmitted. Lets remove the
parameter again.
lightnvm: refactoring of struct openssd to struct nvmd

To rename the project to lightnvm, I'm renaming functions and structures
that have openssd in it and replaces it with nvm.
lightnvm: also print timings

We print pool sizes, page sizes, etc. lets also print ap timings.