hwmon: (emc1403) Add EMC1423 support

EMC1423 uses the similar register and adds a hardware shutdown pin to
protect exceed temperature. This function is set by resistor; it's not
necessary to do anything in the driver except add the emc1423 pid of 0x23.

Signed-off-by: Jekyll Lai <jekyll_lai@wistron.com>
[Updated Kconfig/comments and minor further changes asked for by the hwmon
 maintainers]
Signed-off-by: Alan Cox <alan@linux.intel.com>
[Fixed checkpatch warning]
Signed-of--by: Jean Delvare <khali@linux-fr.org>
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index bdc13d2..35f00da 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -809,10 +809,10 @@
 	  will be called dme1737.
 
 config SENSORS_EMC1403
-	tristate "SMSC EMC1403 thermal sensor"
+	tristate "SMSC EMC1403/23 thermal sensor"
 	depends on I2C
 	help
-	  If you say yes here you get support for the SMSC EMC1403
+	  If you say yes here you get support for the SMSC EMC1403/23
 	  temperature monitoring chip.
 
 	  Threshold values can be configured using sysfs.