ACPICA: revert "acpi_serialize" changes

This reverts 977a6226
and reverts 1ba753ac


and updates acpi_ev_queue_notify_request()
to restore the previous implementation of the
"acpi_serialize" workaround.

http://bugzilla.kernel.org/show_bug.cgi?id=8171

Signed-off-by: Len Brown <len.brown@intel.com>