[gnome-build-meta/valentindavid/xdg-desktop-portal-gtk] Add xdg-desktop-portal-gtk in bootable images

[Valentin David <valentindavid src gnome org>]

commit 41a81e8acdf2fe9a06347919136267ee4be843a8
Author: Valentin David <valentin david codethink co uk>
Date:   Fri Jun 19 14:13:02 2020 +0200

    Add xdg-desktop-portal-gtk in bootable images

 elements/core-deps/flatpak.bst                |  3 +++
 elements/core-deps/xdg-desktop-portal-gtk.bst | 13 +++++++++++++
 2 files changed, 16 insertions(+)
---
diff --git a/elements/core-deps/flatpak.bst b/elements/core-deps/flatpak.bst
index f7d85b0e..f13883e8 100644
--- a/elements/core-deps/flatpak.bst
+++ b/elements/core-deps/flatpak.bst
@@ -30,3 +30,6 @@ depends:
 - freedesktop-sdk.bst:components/libxml2.bst
 - freedesktop-sdk.bst:components/xorg-lib-xau.bst
 - freedesktop-sdk.bst:bootstrap-import.bst
+
+runtime-depends:
+- core-deps/xdg-desktop-portal-gtk.bst
diff --git a/elements/core-deps/xdg-desktop-portal-gtk.bst b/elements/core-deps/xdg-desktop-portal-gtk.bst
new file mode 100644
index 00000000..cdfb31b1
--- /dev/null
+++ b/elements/core-deps/xdg-desktop-portal-gtk.bst
@@ -0,0 +1,13 @@
+kind: autotools
+
+sources:
+- kind: tar
+  url: github_com:flatpak/xdg-desktop-portal-gtk/releases/download/1.6.0/xdg-desktop-portal-gtk-1.6.0.tar.xz
+
+build-depends:
+- freedesktop-sdk.bst:public-stacks/buildsystem-autotools.bst
+
+depends:
+- sdk/gtk+-3.bst
+- core/gnome-desktop.bst
+- freedesktop-sdk.bst:components/xdg-desktop-portal.bst