[PATCH] windfarm: Convert to a new-style i2c drivers

[Paul Mackerras]

Jean Delvare writes:

> The legacy i2c binding model is going away soon, so convert the
> macintosh windfarm drivers to the new model or they will break.

All works OK on my quad G5 (PowerMac11,2).

Tested-by: Paul Mackerras <paulus at samba.org>

Paul.