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/development/tools/dt-schema/default.nix

@@ -0,0 +1,37 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, git
+, ruamel-yaml
+, jsonschema
+, rfc3987
+, setuptools
+, setuptools-scm
+}:
+
+buildPythonPackage rec {
+  pname = "dtschema";
+  version = "2022.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-G5KzuaMbbkuLK+cNvzBld1UwvExS6ZGVW2e+GXQRFMU=";
+  };
+
+  nativeBuildInputs = [ setuptools-scm git ];
+  propagatedBuildInputs = [
+    setuptools
+    ruamel-yaml
+    jsonschema
+    rfc3987
+  ];
+
+  meta = with lib; {
+    description = "Tooling for devicetree validation using YAML and jsonschema";
+    homepage = "https://github.com/devicetree-org/dt-schema/";
+    # all files have SPDX tags
+    license = with licenses; [ bsd2 gpl2 ];
+    maintainers = with maintainers; [ sorki ];
+  };
+}
+