iwlagn: update wowlan API

The WoWLAN API changed due to netdetect and
we now have a more generic "D3 configuration"
command that enables the sysassert & rfkill
wakeup triggers.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>