hwmon: (lm75) Add support for GMT G751 chip

This was tested on a NETGEAR ReadyNAS 2120 device (Marvell Armada XP
based board, via DT).

Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Documentation/devicetree/bindings/i2c/trivial-devices.txt

@@ -35,6 +35,7 @@ fsl,mc13892		MC13892: Power Management Integrated Circuit (PMIC) for i.MX35/51
 fsl,mma8450		MMA8450Q: Xtrinsic Low-power, 3-axis Xtrinsic Accelerometer
 fsl,mpr121		MPR121: Proximity Capacitive Touch Sensor Controller
 fsl,sgtl5000		SGTL5000: Ultra Low-Power Audio Codec
+gmt,g751		G751: Digital Temperature Sensor and Thermal Watchdog with Two-Wire Interface
 infineon,slb9635tt	Infineon SLB9635 (Soft-) I2C TPM (old protocol, max 100khz)
 infineon,slb9645tt	Infineon SLB9645 I2C TPM (new protocol, max 400khz)
 maxim,ds1050		5 Bit Programmable, Pulse-Width Modulator

drivers/hwmon/Kconfig

@@ -656,6 +656,7 @@ config SENSORS_LM75
 
 		- Analog Devices ADT75
 		- Dallas Semiconductor DS75, DS1775 and DS7505
+		- Global Mixed-mode Technology (GMT) G751
 		- Maxim MAX6625 and MAX6626
 		- Microchip MCP980x
 		- National Semiconductor LM75, LM75A

drivers/hwmon/lm75.c

@@ -39,6 +39,7 @@ enum lm75_type {		/* keep sorted in alphabetical order */
 	ds1775,
 	ds75,
 	ds7505,
+	g751,
 	lm75,
 	lm75a,
 	max6625,
@@ -208,6 +209,7 @@ lm75_probe(struct i2c_client *client, const struct i2c_device_id *id)
 		data->resolution = 12;
 		data->sample_time = HZ / 4;
 		break;
+	case g751:
 	case lm75:
 	case lm75a:
 		data->resolution = 9;
@@ -296,6 +298,7 @@ static const struct i2c_device_id lm75_ids[] = {
 	{ "ds1775", ds1775, },
 	{ "ds75", ds75, },
 	{ "ds7505", ds7505, },
+	{ "g751", g751, },
 	{ "lm75", lm75, },
 	{ "lm75a", lm75a, },
 	{ "max6625", max6625, },