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/nzbget.nix

@@ -0,0 +1,46 @@
+import ./make-test-python.nix ({ pkgs, ...} : {
+  name = "nzbget";
+  meta = with pkgs.lib.maintainers; {
+    maintainers = [ aanderse flokli ];
+  };
+
+  nodes = {
+    server = { ... }: {
+      services.nzbget.enable = true;
+
+      # provide some test settings
+      services.nzbget.settings = {
+        "MainDir" = "/var/lib/nzbget";
+        "DirectRename" = true;
+        "DiskSpace" = 0;
+        "Server1.Name" = "this is a test";
+      };
+
+      # hack, don't add (unfree) unrar to nzbget's path,
+      # so we can run this test in CI
+      systemd.services.nzbget.path = pkgs.lib.mkForce [ pkgs.p7zip ];
+    };
+  };
+
+  testScript = { nodes, ... }: ''
+    start_all()
+
+    server.wait_for_unit("nzbget.service")
+    server.wait_for_unit("network.target")
+    server.wait_for_open_port(6789)
+    assert "This file is part of nzbget" in server.succeed(
+        "curl -f -s -u nzbget:tegbzn6789 http://127.0.0.1:6789"
+    )
+    server.succeed(
+        "${pkgs.nzbget}/bin/nzbget -n -o Control_iP=127.0.0.1 -o Control_port=6789 -o Control_password=tegbzn6789 -V"
+    )
+
+    config = server.succeed("${nodes.server.config.systemd.services.nzbget.serviceConfig.ExecStart} --printconfig")
+
+    # confirm the test settings are applied
+    assert 'MainDir = "/var/lib/nzbget"' in config
+    assert 'DirectRename = "yes"' in config
+    assert 'DiskSpace = "0"' in config
+    assert 'Server1.Name = "this is a test"' in config
+  '';
+})