Version 2 changes:
- Switched to using a synchronous method for configuring the
controller.
- Removed any pairing/orientation logic in the driver. Every
controller now corresponds to its own input device.
- Store controller button data as a single u32.
- Style corrections
- Known TODOs:
- Userspace LED configuration support
- Support for the gyroscope data
- Rumble support
Hopefully this version of the driver is much easier to review.
