telit:broadband-mbim: save MBIM originated revision into software_package_version
requested to merge c.lobrano/ModemManager:mm-telit/mbim-telit-broadband-set-package-software-version into main
Currently, MBIM broadband Telit modem does not store firmware revision into 'software_package_version', so it won't be possible to specialize behavior based on modem model (using mm_telit_model_from_revision).
This change overloads load-revision in MBIM broadband Telit in order to call parent's loading and store the returned 'caps_firmware_info' into 'software_package_version' via mm_shared_telit_store_revision.