iwlwifi: allow to wait for a subset of the queues

This will be used later to flush / wait for queues that are
related to a specific vif.

Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

diff --cc drivers/net/wireless/iwlwifi/dvm/lib.c
Simple merge

diff --cc drivers/net/wireless/iwlwifi/dvm/mac80211.c
Simple merge

diff --cc drivers/net/wireless/iwlwifi/iwl-trans.h
Simple merge

diff --cc drivers/net/wireless/iwlwifi/pcie/trans.c
Simple merge