uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

nixos/tests/minidlna.nix

@@ -0,0 +1,41 @@
+import ./make-test-python.nix ({ pkgs, ... }: {
+  name = "minidlna";
+
+  nodes = {
+    server =
+      { ... }:
+      {
+        imports = [ ../modules/profiles/minimal.nix ];
+        networking.firewall.allowedTCPPorts = [ 8200 ];
+        services.minidlna = {
+          enable = true;
+          loglevel = "error";
+          mediaDirs = [
+           "PV,/tmp/stuff"
+          ];
+          friendlyName = "rpi3";
+          rootContainer = "B";
+          extraConfig =
+          ''
+            album_art_names=Cover.jpg/cover.jpg/AlbumArtSmall.jpg/albumartsmall.jpg
+            album_art_names=AlbumArt.jpg/albumart.jpg/Album.jpg/album.jpg
+            album_art_names=Folder.jpg/folder.jpg/Thumb.jpg/thumb.jpg
+            notify_interval=60
+          '';
+        };
+      };
+      client = { ... }: { };
+  };
+
+  testScript =
+  ''
+    start_all()
+    server.succeed("mkdir -p /tmp/stuff && chown minidlna: /tmp/stuff")
+    server.wait_for_unit("minidlna")
+    server.wait_for_open_port("8200")
+    # requests must be made *by IP* to avoid triggering minidlna's
+    # DNS-rebinding protection
+    server.succeed("curl --fail http://$(getent ahostsv4 localhost | head -n1 | cut -f 1 -d ' '):8200/")
+    client.succeed("curl --fail http://$(getent ahostsv4 server | head -n1 | cut -f 1 -d ' '):8200/")
+  '';
+})