iwlwifi: fix inconsistency about power_save module parameter

modinfo and kerneldoc disagreed on the meaning of this field.

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

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