hwmon: (surface_fan) Simplify specifying static visibility attribute

Use new member visible of struct hwmon_ops to simplify specifying
the static attribute visibility.

Signed-off-by: Heiner Kallweit <[e-mail]>
Message-ID: <[e-mail]>
Signed-off-by: Guenter Roeck <[e-mail]>

drivers/hwmon/surface_fan.c

···
 	.command_id      = 0x01,
 });
 
-// hwmon
-static umode_t surface_fan_hwmon_is_visible(const void *drvdata,
-					    enum hwmon_sensor_types type, u32 attr,
-					    int channel)
-{
-	return 0444;
-}
-
 static int surface_fan_hwmon_read(struct device *dev,
 				  enum hwmon_sensor_types type, u32 attr,
 				  int channel, long *val)
···
 };
 
 static const struct hwmon_ops surface_fan_hwmon_ops = {
-	.is_visible = surface_fan_hwmon_is_visible,
+	.visible = 0444,
 	.read = surface_fan_hwmon_read,
 };