[niepce] flatpak: add --device=all to allow access to USB

[Hubert Figuière <hub src gnome org>]

commit 76742c08ab8de0951af72d71ddd12d2d0df2d80d
Author: Hubert Figuière <hub figuiere net>
Date:   Mon Dec 31 22:01:22 2018 -0500

    flatpak: add --device=all to allow access to USB

 flatpak/org.gnome.Niepce.json | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/flatpak/org.gnome.Niepce.json b/flatpak/org.gnome.Niepce.json
index d438ab7..942187e 100644
--- a/flatpak/org.gnome.Niepce.json
+++ b/flatpak/org.gnome.Niepce.json
@@ -23,7 +23,8 @@
         "--filesystem=xdg-run/dconf",
         "--filesystem=~/.config/dconf:ro",
         "--talk-name=ca.desrt.dconf",
-        "--env=DCONF_USER_CONFIG_DIR=.config/dconf"
+        "--env=DCONF_USER_CONFIG_DIR=.config/dconf",
+        "--device=all"
     ],
     "build-options" : {
         "build-args": ["--share=network"],