Log Message:
Update xf86-video-nv to 2.1.2:
- more supported GeForce 8 mobile chips
- more MacBook fixes
- support for very low memory configurations
- fix color map corruptions with some older chips
- mode validation for G80
- rudimentary VBE-based dual head support for pre-G80 chips
- randr 1.2 support
- fix hang in NVSync with EnterVT