[gnome-games] flatpak: Allow host:ro access

[Alexander Mikhaylenko <alexm src gnome org>]

commit 9cdb2ced1aa3d49b09a48a23b2196c419f251801
Author: Yetizone <andreii lisita gmail com>
Date:   Tue Dec 11 13:38:18 2018 +0200

    flatpak: Allow host:ro access
    
    Since we don't use portal file chooser anymore, it's now impossible to add
    games from external drives, so work around that.

 flatpak/org.gnome.Games.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/flatpak/org.gnome.Games.json b/flatpak/org.gnome.Games.json
index 10f3a633..df1de2ec 100644
--- a/flatpak/org.gnome.Games.json
+++ b/flatpak/org.gnome.Games.json
@@ -37,7 +37,7 @@
         /* Needed to be able to run desktop and Steam games */
         "--talk-name=org.freedesktop.Flatpak",
         /* Needed to find the ROMs */
-        "--filesystem=home:ro",
+        "--filesystem=host:ro",
         /* Needed to find flatpaked Steam games */
         "--filesystem=~/.var/app/com.valvesoftware.Steam:ro"
     ],