RDM: Mode verbose decoding of parameter IDs.
    -> I don't see why they were uint8; ANSI E1.33 and ANSI E1.20 use uint16

Change-Id: Ia2c024b503d6a4b8c18020699bdc676a8459dcbd
Reviewed-on: https://code.wireshark.org/review/5783
Reviewed-by: Michael Mann <mmann78@netscape.net>
(cherry picked from commit db93414049b3094734e33a0da49f611c2a211410)
Reviewed-on: https://code.wireshark.org/review/5785