[gtk+/gtk-3-2] Add a few missing Since tags

[Matthias Clasen <matthiasc src gnome org>]

commit c7ba64aaf0f5d9e26178dd1542985b59796abd88
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Mar 11 20:57:59 2012 -0400

    Add a few missing Since tags

 gdk/x11/gdkdevicemanager-x11.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/gdk/x11/gdkdevicemanager-x11.c b/gdk/x11/gdkdevicemanager-x11.c
index b492304..efa3c20 100644
--- a/gdk/x11/gdkdevicemanager-x11.c
+++ b/gdk/x11/gdkdevicemanager-x11.c
@@ -100,6 +100,8 @@ _gdk_x11_device_manager_new (GdkDisplay *display)
  *
  * Returns: (transfer none): (allow-none): The #GdkDevice wrapping the device ID,
  *          or %NULL if the given ID doesn't currently represent a device.
+ *
+ * Since: 3.2
  **/
 GdkDevice *
 gdk_x11_device_manager_lookup (GdkDeviceManager *device_manager,
@@ -145,6 +147,8 @@ gdk_x11_device_manager_lookup (GdkDeviceManager *device_manager,
  * </note>
  *
  * Returns: the XInput2 device ID.
+ *
+ * Since: 3.2
  **/
 gint
 gdk_x11_device_get_id (GdkDevice *device)