TLVs are really limited in size, so if you want to have truly long data passed
between host and modem, you may end up needing multiple QMI messages where the
long TLV is split in segments. Currently support this by handling a built-in
sequence number expected to be found between the array size prefix and the array
itself (see e.g. TLV 0x13 (PRL) in 'DMS Activate Manual'). This sequence number
can be enabled with the new 'sequence-prefix-format' keyword in the array
definition.