gmm: gprs_gmm_att_tlvdef: Add missing definitions from current enum gsm48_gprs_ie_mm Fill in defintions for all enum fields defined as of libosmocore.git 51bbb34a16359941f17a0b80d8fe9b6d73d12307.Change-Id: Icf56950cb60690b5e9982a5c822276466864743a
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