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/text/icdiff/default.nix

@@ -0,0 +1,34 @@
+{ lib, fetchFromGitHub, python3Packages, bash, git, less }:
+
+python3Packages.buildPythonApplication rec {
+  pname = "icdiff";
+  version = "1.9.5";
+
+  src = fetchFromGitHub {
+    owner = "jeffkaufman";
+    repo = "icdiff";
+    rev = "release-${version}";
+    sha256 = "080v8h09pv8qwplin4kwfm0kmqjwdqjfxbpcdrv16sv4hwfwl5qd";
+  };
+
+  checkInputs = [
+    bash
+    git
+    less
+  ];
+
+  # error: could not lock config file /homeless-shelter/.gitconfig: No such file or directory
+  doCheck = false;
+
+  checkPhase = ''
+    patchShebangs test.sh
+    ./test.sh ${python3Packages.python.interpreter}
+  '';
+
+  meta = with lib; {
+    homepage = "https://www.jefftk.com/icdiff";
+    description = "Side-by-side highlighted command line diffs";
+    maintainers = with maintainers; [ ];
+    license = licenses.psfl;
+  };
+}