mdb runner is quite special as it can be used to run Zephyr on
both simulator (nSIM) and real hardware.
However it is really misleading as same command (west flash)
will run Zephyr in simulation for one board and try to run it
on HW for another board. Things are getting worse for boards
supporting both runs in simulation and on real hardware.
Let's split mdb runner for mdb-hw (for runs on HW) and mdb-nsim
(for runs in simulation) runners.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
91d7ec5a35