[PATCH] I2C: Add support for LM77

This patch (against the current stack) adds support for the
LM77 sensor chips made by National Semiconductor. Formerly
this was claimed by the LM75 driver but when I got hold of an
embedded board (built around the National Geode SC1100 CPU),
which was equipped with an LM77, it turned out that the two
chips are not compatible.

It has been developed with help of, reviewed and approved
by Jean Delvare.
Signed-off-by: Andras Bali <drewie@freemail.hu>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

drivers/i2c/chips/Kconfig

@@ -99,6 +99,17 @@ config SENSORS_LM75
 	  This driver can also be built as a module.  If so, the module
 	  will be called lm75.
 
+config SENSORS_LM77
+	tristate "National Semiconductor LM77"
+	depends on I2C && EXPERIMENTAL
+	select I2C_SENSOR
+	help
+	  If you say yes here you get support for National Semiconductor LM77
+	  sensor chips.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called lm77.
+
 config SENSORS_LM78
 	tristate "National Semiconductor LM78 and compatibles"
 	depends on I2C && EXPERIMENTAL

drivers/i2c/chips/Makefile

@@ -15,6 +15,7 @@ obj-$(CONFIG_SENSORS_FSCHER)	+= fscher.o
 obj-$(CONFIG_SENSORS_GL518SM)	+= gl518sm.o
 obj-$(CONFIG_SENSORS_IT87)	+= it87.o
 obj-$(CONFIG_SENSORS_LM75)	+= lm75.o
+obj-$(CONFIG_SENSORS_LM77)	+= lm77.o
 obj-$(CONFIG_SENSORS_LM78)	+= lm78.o
 obj-$(CONFIG_SENSORS_LM80)	+= lm80.o
 obj-$(CONFIG_SENSORS_LM83)	+= lm83.o