[PATCH] I2C: add new chip driver: fscher

[PATCH] I2C: add new chip driver: fscher

This is a new ported driver, fscher, which supports the FSC Hermes chip.
The original driver was written by Reinhard Nissl, who also ported it to
Linux 2.6, as discussed on the lm_sensors mailing list during the last
two weeks. I reviewed the code and we made the necessary changes, so
that what we have now looks good to me. Please apply on top of your i2c
patches stack.