Changes

HACK: ignore tech from other modems if -1

This will allow ofono the report the technology properly using qmimodem.

The real fix would be to use this qmi call [1] to detect what the
current radio interface is, and map that to the right modem.

[1] qmicli -d /dev/cdc-wdm0 --nas-get-rf-band-info

debian/changelog: bump for 1.31.3