Quectel EC25-E in qmi mode

Hi, I'm not sure I've put this question in the correct category, apologies, but i have a quectel mpcie LTE modem in a ZBT WE-826 router. I have successfully built firmware for this device and i have the modem connected to a cellular network in serial USB mode.
Looking at the specs of this modem it does support qmi_wwan from kernel 3.4 onwards, does anybody know what i need to do to get qmi mode working with this modem?
My build is based on Firmware Version-LEDE Reboot 17.01.1 r3316-7eb58cf109 / LuCI lede-17.01 branch (git-17.100.70571-29fabe2)
Kernel Version 4.4.61