hwmon: (lm90) Document support for the MAX6648/6692 chips

Update documentation to prevent further confusion/duplication.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index b84bf06..b4eea02 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -543,8 +543,8 @@
 	help
 	  If you say yes here you get support for National Semiconductor LM90,
 	  LM86, LM89 and LM99, Analog Devices ADM1032 and ADT7461, and Maxim
-	  MAX6646, MAX6647, MAX6649, MAX6657, MAX6658, MAX6659, MAX6680 and
-	  MAX6681 sensor chips.
+	  MAX6646, MAX6647, MAX6648, MAX6649, MAX6657, MAX6658, MAX6659,
+	  MAX6680, MAX6681 and MAX6692 sensor chips.
 
 	  This driver can also be built as a module.  If so, the module
 	  will be called lm90.