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/filesystems/mhddfs/default.nix

@@ -0,0 +1,35 @@
+{ lib, stdenv, fetchurl, fuse, pkg-config, attr, uthash }:
+
+stdenv.mkDerivation rec {
+  pname = "mhddfs";
+  version = "0.1.39";
+
+  src = fetchurl {
+    url = "http://mhddfs.uvw.ru/downloads/mhddfs_${version}.tar.gz";
+    sha256 = "14ggmh91vv69fp2qpz0nxp0hprlw2wsijss2k2485hb0ci4cabvh";
+  };
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ fuse attr uthash ];
+
+  patches = [
+    ./fix-format-security-error.patch
+  ];
+
+  postPatch = ''
+    substituteInPlace src/main.c --replace "attr/xattr.h" "sys/xattr.h"
+    substituteInPlace src/tools.c --replace "attr/xattr.h" "sys/xattr.h"
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp mhddfs $out/bin/
+  '';
+
+  meta = {
+    homepage = "http://mhddfs.uvw.ru/";
+    description = "Combines a several mount points into the single one";
+    license = lib.licenses.gpl3;
+    maintainers = [ lib.maintainers.makefu ];
+  };
+}