hwmon: (axi-fan-control) Make use of sysfs_emit()

Use sysfs_emit() instead of directly call sprintf().
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240214-axi-fan-control-no-of-v1-2-43ca656fe2e3@analog.comSigned-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/axi-fan-control.c

@@ -84,7 +84,7 @@ static ssize_t axi_fan_control_show(struct device *dev, struct device_attribute
 
 	temp = DIV_ROUND_CLOSEST_ULL(temp * 509314ULL, 65535) - 280230;
 
-	return sprintf(buf, "%u\n", temp);
+	return sysfs_emit(buf, "%u\n", temp);
 }
 
 static ssize_t axi_fan_control_store(struct device *dev, struct device_attribute *da,