hwmon: Add driver for SMSC EMC2103 temperature monitor and fan controller

SMSC's EMC2103 family of temperature/fan controllers have 1
onboard and up to 3 external temperature sensors, and allow
closed-loop control of one fan.  This patch adds support for
them.

Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index f3adf18..d50e9fa 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -804,6 +804,16 @@
 	  Threshold values can be configured using sysfs.
 	  Data from the different diodes are accessible via sysfs.
 
+config SENSORS_EMC2103
+	tristate "SMSC EMC2103"
+	depends on I2C
+	help
+	  If you say yes here you get support for the temperature
+	  and fan sensors of the SMSC EMC2103 chips.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called emc2103.
+
 config SENSORS_SMSC47M1
 	tristate "SMSC LPC47M10x and compatibles"
 	help