hwmon: new driver for ST stts751 thermal sensor

This patch adds a HWMON driver for ST Microelectronics STTS751
temperature sensors.

Thanks-to: LABBE Corentin [for suggestions]
Thanks-to: Guenter Roeck [for suggestion and discussions]
Signed-off-by: NAndrea Merello <andrea.merello@gmail.com>
Cc: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

drivers/hwmon/Kconfig

@@ -1459,6 +1459,16 @@ config SENSORS_SCH5636
 	  This driver can also be built as a module.  If so, the module
 	  will be called sch5636.
 
+config SENSORS_STTS751
+	tristate "ST Microelectronics STTS751"
+	depends on I2C
+	help
+	  If you say yes here you get support for STTS751
+	  temperature sensor chips.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called stts751.
+
 config SENSORS_SMM665
 	tristate "Summit Microelectronics SMM665"
 	depends on I2C

drivers/hwmon/Makefile

@@ -148,6 +148,7 @@ obj-$(CONFIG_SENSORS_SMM665)	+= smm665.o
 obj-$(CONFIG_SENSORS_SMSC47B397)+= smsc47b397.o
 obj-$(CONFIG_SENSORS_SMSC47M1)	+= smsc47m1.o
 obj-$(CONFIG_SENSORS_SMSC47M192)+= smsc47m192.o
+obj-$(CONFIG_SENSORS_STTS751)	+= stts751.o
 obj-$(CONFIG_SENSORS_AMC6821)	+= amc6821.o
 obj-$(CONFIG_SENSORS_TC74)	+= tc74.o
 obj-$(CONFIG_SENSORS_THMC50)	+= thmc50.o