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/python-modules/shutilwhich/default.nix

@@ -0,0 +1,30 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pytest
+}:
+
+buildPythonPackage rec {
+  pname = "shutilwhich";
+  version = "1.1.0";
+
+  src = fetchFromGitHub {
+    owner = "mbr";
+    repo = pname;
+    rev = version;
+    sha256 = "05fwcjn86w8wprck04iv1zccfi39skdf0lhwpb4b9gpvklyc9mj0";
+  };
+
+  checkInputs = [ pytest ];
+
+  checkPhase = ''
+    pytest -rs
+  '';
+
+  meta = with lib; {
+    description = "Backport of shutil.which";
+    license = licenses.psfl;
+    homepage = "https://github.com/mbr/shutilwhich";
+    maintainers = with maintainers; [ multun ];
+  };
+}