wifi: iwlwifi: mvm: advertise IEEE80211_HW_HANDLES_QUIET_CSA

The firmware has handled quiet in CSA for a long time now, but
it didn't really matter much. However, now with quiet CSA on a
perhaps secondary link, we don't want mac80211 to stop queues,
we can continue using a link that's not requiring quiet. Set
the feature flag for MLO-capable devices indicating that we'll
handle the quiet entirely in the driver/device.

However, the firmware doesn't handle quiet in AP mode since we
don't really expect to really be needing that (without radar
detection), but - even for testing - make that work properly
by simply not pulling from TXQs in this scenario.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240311081938.fa75403b5eaa.Ie3ff02215f810fcfefd6a22c481567f94f61c0c6@changeid


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