wifi: mac80211: copy first_part into HW scan

cfg80211 now reports whether this is the first part of a scan. Copy
that information into the driver request.

Signed-off-by: Benjamin Berg <benjamin.berg@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20250609213231.63f6078bd7be.Ia6e5cee945e6d9617c2f427552d89d23c92eee83@changeid


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