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/misc/dmg2img/default.nix

@@ -0,0 +1,33 @@
+{ lib, stdenv, fetchurl, zlib, bzip2, openssl, fetchpatch }:
+
+stdenv.mkDerivation rec {
+  pname = "dmg2img";
+  version = "1.6.7";
+
+  src = fetchurl {
+    url = "http://vu1tur.eu.org/tools/dmg2img-${version}.tar.gz";
+    sha256 = "066hqhg7k90xcw5aq86pgr4l7apzvnb4559vj5s010avbk8adbh2";
+  };
+
+  buildInputs = [ zlib bzip2 openssl ];
+
+  patches = [
+    (fetchpatch {
+      url = "https://raw.githubusercontent.com/Homebrew/formula-patches/85fa66a9/dmg2img/openssl-1.1.diff";
+      sha256 = "076sz69hf3ryylplg025vl8sj991cb81g3yazsmrf8anrd7ffmxx";
+    })
+  ];
+
+  patchFlags = [ "-p0" ];
+
+  installPhase = ''
+    install -D dmg2img $out/bin/dmg2img
+    install -D vfdecrypt $out/bin/vfdecrypt
+  '';
+
+  meta = {
+    platforms = lib.platforms.unix;
+    description = "An Apple's compressed dmg to standard (hfsplus) image disk file convert tool";
+    license = lib.licenses.gpl3;
+  };
+}