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/graphics/jbig2enc/default.nix

@@ -0,0 +1,35 @@
+{ lib, stdenv, fetchFromGitHub, leptonica, zlib, libwebp, giflib, libjpeg, libpng, libtiff }:
+
+stdenv.mkDerivation rec {
+  pname = "jbig2enc";
+  version = "0.28";
+
+  src = fetchFromGitHub {
+    owner = "agl";
+    repo = "jbig2enc";
+    rev = "${version}-dist";
+    hash = "sha256-Y3IVTjvO5tqn/O076y/llnTyenKpbx1WyT/JFZ/s0VY=";
+  };
+
+  propagatedBuildInputs = [ leptonica zlib libwebp giflib libjpeg libpng libtiff ];
+
+  patches = [
+    # https://github.com/agl/jbig2enc/commit/53ce5fe7e73d7ed95c9e12b52dd4984723f865fa
+    ./53ce5fe7e73d7ed95c9e12b52dd4984723f865fa.patch
+  ];
+
+  # This is necessary, because the resulting library has
+  # /tmp/nix-build-jbig2enc/src/.libs before /nix/store/jbig2enc/lib
+  # in its rpath, which means that patchelf --shrink-rpath removes
+  # the /nix/store one.  By cleaning up before fixup, we ensure that
+  # the /tmp/nix-build-jbig2enc/src/.libs directory is gone.
+  preFixup = ''
+    make clean
+  '';
+
+  meta = {
+    description = "Encoder for the JBIG2 image compression format";
+    license = lib.licenses.asl20;
+    platforms = lib.platforms.all;
+  };
+}