Multi-sentence NMEA messages were printed as is, that is with
linebreaks, which made mmcli --location-get output look broken.
Split NMEA sentences with linebreaks to separate output list items, so
that they line up correctly.
Fixes the regexp in check_append_or_replace() to accept
1. more multi-sentence NMEA messages (ALM, GSV, RTE, SFI)
2. multi-sentence NMEA messages from all talkers, not just GPS
(i.e. GPGSV, GLGSV, GAGSV etc.)
Teemu Ikonen