This adds support for the LM86, MAX6657 and MAX6658 sensor chips to the
lm90 driver. These are less popular than the LM90 and ADM1032 but
several users have reported to use these, so I added support to the lm90
driver. All these chips are fully compatible so that's just a matter of
accepting the new chip ids. I also slightly simplified the detection
code.


Signed-off-by: Jean Delvare <khali at linux-fr dot org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>