hwmon: (mlxreg-fan) Support distinctive names per different cooling devices

Provide different names for cooling devices registration to allow
binding each cooling devices to relevant thermal zone. Thus, specific
cooling device can be associated with related thermal sensor by setting
thermal cooling device type for example to "mlxreg_fan2" and passing
this type to thermal_zone_bind_cooling_device() through 'cdev->type'.

Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Link: https://lore.kernel.org/r/20210926053541.1806937-3-vadimp@nvidia.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/mlxreg-fan.c

@@ -263,6 +263,13 @@ mlxreg_fan_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr,
 	return 0;
 }
 
+static char *mlxreg_fan_name[] = {
+	"mlxreg_fan",
+	"mlxreg_fan1",
+	"mlxreg_fan2",
+	"mlxreg_fan3",
+};
+
 static const struct hwmon_channel_info *mlxreg_fan_hwmon_info[] = {
 	HWMON_CHANNEL_INFO(fan,
 			   HWMON_F_INPUT | HWMON_F_FAULT,
@@ -565,8 +572,8 @@ static int mlxreg_fan_cooling_config(struct device *dev, struct mlxreg_fan *fan)
 		if (!pwm->connected)
 			continue;
 		pwm->fan = fan;
-		pwm->cdev = devm_thermal_of_cooling_device_register(dev, NULL, "mlxreg_fan", pwm,
-								    &mlxreg_fan_cooling_ops);
+		pwm->cdev = devm_thermal_of_cooling_device_register(dev, NULL, mlxreg_fan_name[i],
+								    pwm, &mlxreg_fan_cooling_ops);
 		if (IS_ERR(pwm->cdev)) {
 			dev_err(dev, "Failed to register cooling device\n");
 			return PTR_ERR(pwm->cdev);