mac80211_hwsim: add support for OCB

OCB (Outside the Context of a BSS) interfaces are the
implementation of 802.11p, support that.

Signed-off-by: Ramon Fontes <ramonreisfontes@gmail.com>
Link: https://lore.kernel.org/r/20191010181307.11821-2-ramonreisfontes@gmail.com


Signed-off-by: Johannes Berg <johannes.berg@intel.com>