port-qmi: allow using vendor specific qmi_wwan drivers
requested to merge rafal.mszal/ModemManager:rafal-mszal-allow-using-quectel-qmi-wwan-q-kernel-driver into master
This change will fix and issue with Modem Manager not using qmi_wwan_q driver provided by Quectel in the latest integration guides for QMI controlled modems. Without this change Modem Manager tries to use cdc-wdm interface as AT port and then fallbacks to ttyUSB ports ignoring QMI interface.
Let me know whether you find it useful, I think it will save days of debugging for other engineers integrating Quectel modems with Modem Manager.