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/libxcrypt/default.nix

@@ -0,0 +1,34 @@
+{ lib, stdenv, fetchFromGitHub, autoconf, automake, libtool, pkg-config, perl }:
+
+stdenv.mkDerivation rec {
+  pname = "libxcrypt";
+  version = "4.4.28";
+
+  src = fetchFromGitHub {
+    owner = "besser82";
+    repo = "libxcrypt";
+    rev = "v${version}";
+    sha256 = "sha256-Ohf+RCOXnoCxAFnXXV9e2TCqpfZziQl+FGJTGDSQTF0=";
+  };
+
+  preConfigure = ''
+    patchShebangs autogen.sh
+    ./autogen.sh
+  '';
+
+  configureFlags = [
+    "--disable-werror"
+  ];
+
+  nativeBuildInputs = [ autoconf automake libtool pkg-config perl ];
+
+  doCheck = true;
+
+  meta = with lib; {
+    description = "Extended crypt library for descrypt, md5crypt, bcrypt, and others";
+    homepage = "https://github.com/besser82/libxcrypt/";
+    platforms = platforms.all;
+    maintainers = with maintainers; [ dottedmag ];
+    license = licenses.lgpl21Plus;
+  };
+}