Add nSIM-based (simulator) boards with
* nsim_hs5x - single core ARCv3 HS5x 32 bit CPU
* nsim_hs5x_smp - SMP, two core ARCv3 HS5x 32 bit CPU
Signed-off-by: Evgeniy Paltsev <PaltsevEvgeniy@gmail.com>
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>