CAN-Bus support

Leonid Riedel
Our company would be happy to use your NanoPi in a project in conjunction
with a CAN-Bus interface and a corresponding library. As we were looking
into the Linux image provided in your Wiki we noticed the lack of necessary
CAN-modules. Our attempts to build and add the CAN-modules manually have
failed, and so did the attempt to build a new kernel that supports them.