ACPICA: iASL: Add support for CEDT table

Also, update the CEDT template.

ACPICA commit 1e6dded267b13c4aa0c3e16de0fa89d3b9c880e9

Link: https://github.com/acpica/acpica/commit/1e6dded2


Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Erik Kaneda <erik.kaneda@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>