RM3100 on Ardupilot .3.6?

I se that there is currently not Support for the RM3100 Magnetometer in Ardupilot 3.6. (from my understanding it has to do with Drivers missing )
Is it possible to get it working on 3.6 ? We are running a Helipilot version that is build on V3.6 .

We tried to take the RM3100 drivers from V4 and compile it in 3.6 but it crashes while compiling when it gets to the new compass…

If it is possible- do anyone have a Road map on how to do it ? ( Pretty new to Pixhawk / Open source )