wifi: iwlwifi: mvm: adjust to MLO assign/unassign/switch_vif_chanctx()

Pass link_conf when it's necessary and change the code accordingly.

Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230328104949.dc1074239c5b.I30db722af9009f1b274fa929f276fd2b78520dea@changeid


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