[niepce] flatpak: added libusb for libgphoto2 USB support

[Hubert Figuière <hub src gnome org>]

commit e64688dbaaf05637a05c81223d99919e6f8be442
Author: Hubert Figuière <hub figuiere net>
Date:   Tue Dec 25 10:16:03 2018 -0500

    flatpak: added libusb for libgphoto2 USB support

 flatpak/org.gnome.Niepce.json | 11 +++++++++++
 1 file changed, 11 insertions(+)
---
diff --git a/flatpak/org.gnome.Niepce.json b/flatpak/org.gnome.Niepce.json
index 43e777b..dc7320c 100644
--- a/flatpak/org.gnome.Niepce.json
+++ b/flatpak/org.gnome.Niepce.json
@@ -39,6 +39,17 @@
         "*.a"
     ],
     "modules" : [
+        {
+            "name": "libusb",
+            "sources" : [
+                {
+                "type" : "archive",
+                "url" : "https://github.com/libusb/libusb/releases/download/v1.0.22/libusb-1.0.22.tar.bz2";,
+                "sha256" : "75aeb9d59a4fdb800d329a545c2e6799f732362193b465ea198f2aa275518157"
+                }
+            ],
+            "config-opts" : ["--disable-udev"]
+        },
         {
             "name" : "libgphoto2",
             "sources" : [