PsId and ITS-AID are defined in several documents and listed in
ieee1609.12. Put these definitions in ieee1609.2 ASN1 definition and
export it so that GeoNetworking and wsmp dissectors may use it.
Change-Id: Ia3ac181a4c9092b555decb3ee7c5e78adcece5c0
Reviewed-on: https://code.wireshark.org/review/31236
Petri-Dish: Anders Broman <a.broman58@gmail.com>
Tested-by: Petri Dish Buildbot
Reviewed-by: Anders Broman <a.broman58@gmail.com>