Has anyone managed to get a camera, either CSI or UVC, working with Android on the DragonBoard 410c?"
Would this post regarding UVC camera on Android help you?
Thanks for the link. It does seem to be more about how to install APKs on Android outside Google store though...
CSI is not supported yet. For now, only USB is working, but that is being worked on. Please see here for more information: https://developer.qualcomm.com/download/db410c/usb-camera-application-note.pdf