wifi: iwlwifi: mld: support channel survey collection for ACS scans

The firmware is able to collect channel statistics when doing passive
scans. Enable the flag when doing a passive scan on an AP interface and
collect the survey information.

Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250723094230.a659ef1b1fd8.I24a9a0383327c231f36be170968bc7bac801f9f2@changeid