wifi: iwlwifi: mvm: store WMM params per link

We have the data structure set up to store the parameters
per link, but weren't using them. Fix that and store them
in the right link.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230614123446.332c4949a1be.Icae03975d578b0cc82279911a1ea7cbc313046d6@changeid


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