[libmanette] device: Explain where to find bustype IDs

[Adrien Plazas <aplazas src gnome org>]

commit 4010a2d06f6389e53a048ea785f426147845e0c2
Author: vanadiae <vanadiae35 gmail com>
Date:   Sat Oct 17 21:37:46 2020 +0200

    device: Explain where to find bustype IDs

 src/manette-device.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/manette-device.c b/src/manette-device.c
index 6f0e8d2..30f5540 100644
--- a/src/manette-device.c
+++ b/src/manette-device.c
@@ -705,6 +705,7 @@ manette_device_get_vendor_id (ManetteDevice *self)
  * @self: a #ManetteDevice
  *
  * Gets the device's bustype ID.
+ * This corresponds to BUS_* as defined in linux/input-event-codes.h
  *
  * Returns: the bustype ID of @self
  */