If you want to start Linux driver development, get an ARM-based board, or any other board that comes with Linux out of the box.
Just for making the answer complete, if you want to *really* port Linux to this board...if it is just a hobby/learning project... However, do not think that you'll get a procedure on this or that it will be easy. This would be a project with heavy research and try-and-see project.
First step toards Linux is to have GCC working for the target architecture. Nothing stops you from trying with another compiler, but Linux and GCC are closely linked and most different compilers will simply fail compiling a working Linux image. AFAIK this core is not supported by GCC at the moment. If so, the first step is to port GCC. If you're ready, go forward.