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/compression/hacpack/default.nix

@@ -0,0 +1,33 @@
+{ lib, stdenv, fetchFromGitHub }:
+
+stdenv.mkDerivation rec {
+  pname = "hacpack";
+  version = "1.36";
+
+  src = fetchFromGitHub {
+    owner = "The-4n";
+    repo = "hacpack";
+    rev = "v${version}";
+    sha256 = "0d846l36w1n9rxv79fbyhl2zdbqhlgrvk21b9vzr9x77yki89ygs";
+  };
+
+  preConfigure = ''
+    mv config.mk.template config.mk
+  '';
+
+  makeFlags = [ "CC=${stdenv.cc.targetPrefix}cc" ];
+  enableParallelBuilding = true;
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp ./hacpack $out/bin
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/The-4n/hacPack";
+    description = "Make and repack Nintendo Switch NCAs/NSPs";
+    license = licenses.gpl2Only;
+    maintainers = [ maintainers.ivar ];
+    platforms = platforms.linux;
+  };
+}