packet-xml: Add 3GPP, ETSI, GSMA and OMA media types
Not all media types are IANA registered
https://www.iana.org/assignments/media-types/media-types.xhtml
http://www.gsma.com/newsroom/wp-content/uploads/IR.95-v2.0-3.docx
http://www.openmobilealliance.org/release/XDM/V2_2_1-
20170124-A/OMA-ERELD-XDM-V2_2_1-
20170124-A.pdf
Change-Id: I7e2e1ef5ddcff91f04655d84836e10b9bf20d765
Reviewed-on: https://code.wireshark.org/review/22273
Petri-Dish: Anders Broman <a.broman58@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Anders Broman <a.broman58@gmail.com>