thermal: int340x_thermal: Use sysfs_emit_at() instead of scnprintf()

Follow the advice of the Documentation/filesystems/sysfs.rst that show()
should only use sysfs_emit() or sysfs_emit_at() when formatting the
value to be returned to user space.
Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
[ rjw: Subject rewrite ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/thermal/intel/int340x_thermal/int3400_thermal.c

@@ -130,10 +130,7 @@ static ssize_t available_uuids_show(struct device *dev,
 
 	for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; i++) {
 		if (priv->uuid_bitmap & (1 << i))
-			length += scnprintf(&buf[length],
-					    PAGE_SIZE - length,
-					    "%s\n",
-					    int3400_thermal_uuids[i]);
+			length += sysfs_emit_at(buf, length, int3400_thermal_uuids[i]);
 	}
 
 	return length;
@@ -151,10 +148,7 @@ static ssize_t current_uuid_show(struct device *dev,
 
 	for (i = 0; i <= INT3400_THERMAL_CRITICAL; i++) {
 		if (priv->os_uuid_mask & BIT(i))
-			length += scnprintf(&buf[length],
-					    PAGE_SIZE - length,
-					    "%s\n",
-					    int3400_thermal_uuids[i]);
+			length += sysfs_emit_at(buf, length, int3400_thermal_uuids[i]);
 	}
 
 	if (length)