We're going to use certain new features included in the custom tool.

Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>

This will make it slightly easier to port mm_port_serial_at_command() to
use GTask, since we won't have to keep a pointer to the result in GTask
after _finish() has been called.

In most cases the caller needs the value anyway, so this doesn't add too
much hasle.

  ../src/plugins/cinterion/mm-plugin-cinterion.c:65:1: warning: no previous prototype for ‘is_port_already_tagged’ [-Wmissing-prototypes]
     65 | is_port_already_tagged (MMPortProbe *probe)
        | ^~~~~~~~~~~~~~~~~~~~~~

The Cinterion plugin is using the output of the SQPORT? to guess which
ports can be used for AT commands and data connection.

Yet at the same time the udev adds port type hints to the Cinterion
modem upon its discovery.

This commit changes the initialization in a way that from now on it
skips sending SQPORT? when the port type hints are already assigned. By
doing this we make sure that the udev port type hints are being used
when they are available. In case they are not the initialization relies
on the outout of SQPORT? as it did do far.

See: https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/merge_requests/782

The supported Quectel modules are usually QMI based and therefore
very new, there is no real requirement to support QCDM based
management.

The supported broadmobi modules are usually QMI based and therefore
very new, there is no real requirement to support QCDM based
management.