Daniel, did you ever manage to get can bus working?
I tried with my banana pi, building my own armbian 5.05 (trusty) image with the patches provided above, but I have the same issue; "Cannot find device "can0"".
I can however see the device in the device tree: /proc/device-tree/soc@01c00000/can@01c2bc00.
For anyone else looking at this, I was able to find my issue; with the consolidation of the BananaPi and the BPI-Pro in the armbian build tools, you need to patch the bananapipro device tree, not just the plain bpi device tree. This patch is what I used to patch the device tree in the 4.4 kernel
