Add an APDU backend for MBIM devices.
The MBIM device path can be passed via the MBIM_DEVICE environment
variable. We'll default to /dev/cdc-wdm0.
By default we will not operate through the mbim-proxy. Set
MBIM_USE_PROXY to 1 to enable this.
Like QMI devices, use UIM_PORT to select the active SIM slot.
Tested on Semtech EM9191 and EM7590, and Quectel RM520N-GL.
resolve#94
Signed-off-by: Frans Klaver <frans.klaver@vislink.com>
Co-authored-by: Frans Klaver <frans.klaver@vislink.com>
5987dfa815