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/development/libraries/leptonica/default.nix

@@ -0,0 +1,29 @@
+{ lib, stdenv, fetchurl, autoreconfHook, pkg-config, which, gnuplot
+, giflib, libjpeg, libpng, libtiff, libwebp, openjpeg, zlib
+}:
+
+stdenv.mkDerivation rec {
+  pname = "leptonica";
+  version = "1.82.0";
+
+  src = fetchurl {
+    url = "http://www.leptonica.org/source/${pname}-${version}.tar.gz";
+    sha256 = "sha256-FVMC7pFGaMJ7b+PKn/LaY7JF9tYvMGHI8nVjd0uK4tY=";
+  };
+
+  nativeBuildInputs = [ autoreconfHook pkg-config ];
+  buildInputs = [ giflib libjpeg libpng libtiff libwebp openjpeg zlib ];
+  enableParallelBuilding = true;
+
+  checkInputs = [ which gnuplot ];
+
+  # Fails on pngio_reg for unknown reason
+  doCheck = false; # !stdenv.isDarwin;
+
+  meta = {
+    description = "Image processing and analysis library";
+    homepage = "http://www.leptonica.org/";
+    license = lib.licenses.bsd2; # http://www.leptonica.org/about-the-license.html
+    platforms = lib.platforms.unix;
+  };
+}