wifi: nl80211/cfg80211: add negotiated burst period to FTM result

wifi: nl80211/cfg80211: add negotiated burst period to FTM result

The FTM result includes some of the periodic measurement negotiated
parameters (like the burst duration and number of bursts), but it
doesn't include the burst period. Add it to the FTM result
notification.

Signed-off-by: Avraham Stern <avraham.stern@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/20260111190221.e0778f86edef.I3c98c1933eb639963bc3ffdef81a8788b59f2188@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>