use libosmocom to parse cell identifier in bssmap_rx_l3_compl()

Use the new gsm0808_dec_cell_id_list2() API to decode the cell
identifier in the bssap COMPLETE LAYER 3 information message.

Also, actually compare the MCC-MNC in WHOLE_GLOBAL and LAI_AND_LAC
cell identifiers to the network configuration, and drop messages
with mismatching MCC-MNC (addresses OS#2980).

Related: OS#2847
Related: OS#2980
Change-Id: I855477507e4d65fb9890da0ceea26dd2c4dfaf82
1 file changed