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>

pkgs/tools/misc/pandoc-fignos/default.nix

@@ -0,0 +1,30 @@
+{ buildPythonApplication
+, fetchFromGitHub
+, lib
+, pandoc-xnos
+}:
+
+buildPythonApplication rec {
+  pname = "pandoc-fignos";
+  version = "2.4.0";
+  format = "pyproject";
+
+  src = fetchFromGitHub {
+    owner = "tomduck";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-eDwAW0nLB4YqrWT3Ajt9bmX1A43wl+tOPm2St5VpCLk=";
+  };
+
+  propagatedBuildInputs = [ pandoc-xnos ];
+
+  # Different pandoc executables are not available
+  doCheck = false;
+
+  meta = with lib; {
+    description = "Standalone pandoc filter from the pandoc-xnos suite for numbering figures and figure references";
+    homepage = "https://github.com/tomduck/pandoc-fignos";
+    license = licenses.gpl3Only;
+    maintainers = with maintainers; [ ppenguin ];
+  };
+}