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/libraries/doctest/default.nix

@@ -0,0 +1,23 @@
+{ lib, stdenv, fetchFromGitHub, installShellFiles, cmake }:
+
+stdenv.mkDerivation rec {
+  pname = "doctest";
+  version = "2.4.8";
+
+  src = fetchFromGitHub {
+    owner = "doctest";
+    repo = "doctest";
+    rev = "v${version}";
+    sha256 = "sha256-/4lyCQZHsa32ozes5MJ0JZpQ99MECRlgFeSzN/Zs/BQ=";
+  };
+
+  nativeBuildInputs = [ cmake ];
+
+  meta = with lib; {
+    homepage = "https://github.com/doctest/doctest";
+    description = "The fastest feature-rich C++11/14/17/20 single-header testing framework";
+    platforms = platforms.all;
+    license = licenses.mit;
+    maintainers = with maintainers; [ davidtwco ];
+  };
+}