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/archivers/unzoo/default.nix

@@ -0,0 +1,44 @@
+{ lib
+, stdenv
+, fetchFromGitHub
+}:
+
+stdenv.mkDerivation rec {
+  pname = "unzoo";
+  version = "4.4";
+
+  src = fetchFromGitHub {
+    owner = "museoa";
+    repo = pname;
+    rev = version;
+    hash = "sha256-oPq1I7EsvHaJ7anHbm/KWrYrxJkM79rLhgRfSAdoLtk=";
+  };
+
+  outputs = [ "out" "doc" ];
+
+  buildPhase = ''
+    runHook preBuild
+
+    ${stdenv.cc.targetPrefix}cc -o unzoo -DSYS_IS_UNIX src/unzoo.c
+
+    runHook postBuild
+  '';
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/bin $doc/share/doc/${pname}
+    cp unzoo $out/bin
+    cp README.TXT $doc/share/doc/${pname}
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/museoa/unzoo/";
+    description = "Manipulate archives of files in Zoo compressed form";
+    license = licenses.publicDomain;
+    maintainers = with maintainers; [ AndersonTorres ];
+    platforms = platforms.all;
+  };
+}