PCO field in QMI message may be empty
As seen in #688 (closed)
<<<<<< TLV:
<<<<<< type = "Operator Reserved PCO" (0x2f)
<<<<<< length = 8
<<<<<< value = 00:00:00:00:00:00:00:00
<<<<<< translated = [ mcc = '0' mnc = '0' mnc_includes_pcs_digit = 'no' app_specific_info = '{}' container_id = '0' ]
This results in:
ModemManager[562783]: <err> [1673538458.350130] mm_utils_bin2hexstr: assertion 'bin != NULL' failed
ModemManager[562783]: <dbg> [1673538458.350167] [modem0/bearer0] container ID: 0
ModemManager[562783]: <dbg> [1673538458.350201] [modem0/bearer0] app specific info: (null)
Should we ignore this PCO altogether in ModemManager? E.g. if app specific info is empty, just skip.