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/rust/maturin/pyo3-test/default.nix

@@ -0,0 +1,12 @@
+{ python3
+, rustPlatform
+}:
+
+python3.pkgs.callPackage ./generic.nix {
+  buildAndTestSubdir = "examples/word-count";
+
+  nativeBuildInputs = with rustPlatform; [
+    cargoSetupHook
+    maturinBuildHook
+  ];
+}