wifi: mac80211_hwsim: add support for BSS color

Advertise support for BSS color and then once the countdown reaches 0,
call color change finish.

Signed-off-by: Aditya Kumar Singh <quic_adisi@quicinc.com>
Link: https://msgid.link/20240422053412.2024075-8-quic_adisi@quicinc.com


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