[gnome-builder] flatpak: Include amtk dependency

[Christian Hergert <chergert src gnome org>]

commit 2db6ee3c18c8b09c83ec8866e57e7dc19f2b75b9
Author: albfan <albertofanjul gmail com>
Date:   Sat Apr 14 10:33:23 2018 +0200

    flatpak: Include amtk dependency
    
    devhelp now requires amtk

 build-aux/flatpak/org.gnome.Builder.json | 11 +++++++++++
 1 file changed, 11 insertions(+)
---
diff --git a/build-aux/flatpak/org.gnome.Builder.json b/build-aux/flatpak/org.gnome.Builder.json
index b55b4e6f6..f4be1751d 100644
--- a/build-aux/flatpak/org.gnome.Builder.json
+++ b/build-aux/flatpak/org.gnome.Builder.json
@@ -540,6 +540,17 @@
                 }
             ]
         },
+        {
+            "name" : "amtk",
+            "buildsystem" : "autotools",
+            "builddir" : true,
+            "sources" : [
+                {
+                    "type" : "git",
+                    "url" : "https://git.gnome.org/browse/amtk";
+                }
+            ]
+        },
         {
             "name" : "devhelp",
             "buildsystem" : "meson",