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/efficient-compression-tool/default.nix

@@ -0,0 +1,39 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+, boost
+, cmake
+, nasm
+, libpng
+}:
+
+stdenv.mkDerivation rec {
+  pname = "efficient-compression-tool";
+  version = "0.9.1";
+
+  src = fetchFromGitHub {
+    owner = "fhanau";
+    repo = "Efficient-Compression-Tool";
+    rev = "v${version}";
+    sha256 = "sha256-TSV5QXf6GuHAwQrde3Zo9MA1rtpAhtRg0UTzMkBnHB8=";
+    fetchSubmodules = true;
+  };
+
+  nativeBuildInputs = [ cmake nasm ];
+
+  patches = [ ./use-nixpkgs-libpng.patch ];
+
+  buildInputs = [ boost libpng  ];
+
+  cmakeDir = "../src";
+
+  cmakeFlags = [ "-DECT_FOLDER_SUPPORT=ON" ];
+
+  meta = with lib; {
+    description = "Fast and effective C++ file optimizer";
+    homepage = "https://github.com/fhanau/Efficient-Compression-Tool";
+    license = licenses.asl20;
+    maintainers = [ maintainers.lunik1 ];
+    platforms = platforms.linux;
+  };
+}