wifi: iwlwifi: mvm: improve/fix chanctx min_def use logic

wifi: iwlwifi: mvm: improve/fix chanctx min_def use logic

There are two cases in which the min_def isn't used:
 a) if FILS will be enabled
 b) if FTM responder is enabled

Both of these apply to AP mode only, but for FILS we're
not checking that right now. Change the code to iterate
the interfaces and links using the channel context, and
check for AP mode for both, not just for FTM responder.

In the case of iwl_mvm_enable_fils() this might also fix
an issue where FILS is enabled for an IBSS network that
happens to be started on 6 GHz, though that's not very
likely to be possible due to regulatory.

However for RX OMI bandwidth reduction the driver needs
to use the min_def in client mode as well, in order to
actually reduce bandwidth when it requested that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20241231135726.7b91025e103d.I4c99c03fd32363d574ab5e34798b6099401f0729@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>