starlet-ipc driver added

We have added support for interfacing with the starlet co-processor found in the Nintendo Wii.

The starlet-ipc platform driver provides a set of primitives enabling the execution of IPC calls to starlet. As a practical example, we have added code to properly restart and shutdown the Nintendo Wii via the starlet processor.

The source code changes are already available through the project's cvs service at http://gc-linux.cvs.sourceforge.net/gc-linux/linux .