iwlwifi: mvm: handle IBSS probe_queue in a few missing places

When IBSS was implemented for DQA, we missid a few places where it
should be handled in the same way as AP.

Fixes: ee48b722

 ("iwlwifi: mvm: support ibss in dqa mode")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>