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/reproc/default.nix

@@ -0,0 +1,31 @@
+{ stdenv, lib, fetchFromGitHub, cmake
+}:
+
+stdenv.mkDerivation rec {
+  pname = "reproc";
+  version = "14.2.4";
+
+  src = fetchFromGitHub {
+    owner = "DaanDeMeyer";
+    repo = "reproc";
+    rev = "v${version}";
+    sha256 = "sha256-LWzBeKhE7cSiZsK8xWzoTdrOcPiU/zEkmi40WiFytic=";
+  };
+
+  nativeBuildInputs = [ cmake ];
+
+  cmakeFlags = [
+    "-DCMAKE_BUILD_TYPE=Release"
+    "-DCMAKE_INSTALL_LIBDIR=lib"
+    "-DBUILD_SHARED_LIBS=ON"
+    "-DREPROC++=ON"
+    "-DREPROC_TEST=ON"
+  ];
+
+  meta = with lib; {
+    homepage = "https://github.com/DaanDeMeyer/reproc";
+    description = "A cross-platform (C99/C++11) process library";
+    license = licenses.mit;
+    platforms = platforms.all;
+  };
+}