Install linux headers for kernel module development

@jkridner I deployed it for the Gateway in staging too, it’s already there at the same 2.65.1+rev2 version. The Gateweay board is scheduled to arrive on Wednesday, as soon as it arrives we can bring that one in production too.

Regarding the error you see, maybe you are trying to perform an update on a device that has the Beaglebone Gateway image flashed but it’s running in the production dashboard, where this new device type is not available yet?