Adds merged RATType from CR0474

    nonIMEISVPEI                    [15] NonIMEISVPEI OPTIONAL,

    mACRestIndicator                [16] MACRestrictionIndicator OPTIONAL,

    pagingRestrictionIndicator      [17] PagingRestrictionIndicator OPTIONAL,

    rRCEstablishmentCause           [18] RRCEstablishmentCause OPTIONAL,

    nGInformation                   [19] NGInformation OPTIONAL,

    nASTransportInitialInformation  [20] NASTransportInitialInformation OPTIONAL

    rATType                         [18] RATType OPTIONAL,

    rRCEstablishmentCause           [19] RRCEstablishmentCause OPTIONAL,

    nGInformation                   [20] NGInformation OPTIONAL,

    nASTransportInitialInformation  [21] NASTransportInitialInformation OPTIONAL

}

-- See clause 6.2.2.2.3 for details of this structure