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/os-specific/linux/policycoreutils/default.nix

@@ -0,0 +1,39 @@
+{ lib, stdenv, fetchurl, gettext, libsepol, libselinux, libsemanage }:
+
+stdenv.mkDerivation rec {
+  pname = "policycoreutils";
+  version = "3.3";
+  inherit (libsepol) se_url;
+
+  src = fetchurl {
+    url = "${se_url}/${version}/policycoreutils-${version}.tar.gz";
+    sha256 = "0y0hl32b2ks7r0fhbx3k2j1gqqms5aplyasjs3fz50caxl6096a1";
+  };
+
+  postPatch = ''
+    # Fix install references
+    substituteInPlace po/Makefile \
+       --replace /usr/bin/install install --replace /usr/share /share
+    substituteInPlace newrole/Makefile --replace /usr/share /share
+
+    sed -i -e '39i#include <crypt.h>' run_init/run_init.c
+  '';
+
+  nativeBuildInputs = [ gettext ];
+  buildInputs = [ libsepol libselinux libsemanage ];
+
+  makeFlags = [
+    "PREFIX=$(out)"
+    "SBINDIR=$(out)/bin"
+    "ETCDIR=$(out)/etc"
+    "BASHCOMPLETIONDIR=$out/share/bash-completion/completions"
+    "LOCALEDIR=$(out)/share/locale"
+    "MAN5DIR=$(out)/share/man/man5"
+  ];
+
+  meta = with lib; {
+    description = "SELinux policy core utilities";
+    license = licenses.gpl2;
+    inherit (libsepol.meta) homepage platforms maintainers;
+  };
+}