hwmon: (lm90) Support MAX6646, MAX6647 and MAX6649

These Maxim chips are similar to MAX6657 but use unsigned temperature
values to allow for readings up to 145 degrees.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 96701e0..6de1e0f 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -511,7 +511,8 @@
 	help
 	  If you say yes here you get support for National Semiconductor LM90,
 	  LM86, LM89 and LM99, Analog Devices ADM1032 and ADT7461, and Maxim
-	  MAX6657, MAX6658, MAX6659, MAX6680 and MAX6681 sensor chips.
+	  MAX6646, MAX6647, MAX6649, MAX6657, MAX6658, MAX6659, MAX6680 and
+	  MAX6681 sensor chips.
 
 	  This driver can also be built as a module.  If so, the module
 	  will be called lm90.