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/text/schema2ldif/default.nix

@@ -0,0 +1,33 @@
+{ lib, stdenv, fetchurl, makeWrapper, perlPackages }:
+
+stdenv.mkDerivation rec {
+  pname = "schema2ldif";
+  version = "1.3";
+
+  src = fetchurl {
+    url = "https://repos.fusiondirectory.org/sources/schema2ldif/schema2ldif-${version}.tar.gz";
+    sha256 = "00cd9xx9g0mnnfn5lvay3vg166z84jla0ya1x34ljdc8bflxsr9a";
+  };
+
+  buildInputs = [ perlPackages.perl ];
+  nativeBuildInputs = [ makeWrapper ];
+
+  installPhase = ''
+    mkdir -p $out/bin $out/share/man/man1
+
+    cp bin/{schema2ldif,ldap-schema-manager} $out/bin
+    gzip -c man/schema2ldif.1 > $out/share/man/man1/schema2ldif.1.gz
+    gzip -c man/ldap-schema-manager.1 > $out/share/man/man1/ldap-schema-manager.1.gz
+
+    wrapProgram $out/bin/schema2ldif \
+       --prefix PERL5PATH : "${perlPackages.makePerlPath [ perlPackages.GetoptLong ]}"
+  '';
+
+  meta = with lib; {
+    description = "Utilities to manage schema in .schema and .ldif format";
+    homepage = "https://www.fusiondirectory.org/schema2ldif-project-and-components/";
+    license = licenses.bsd3;
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ das_j ];
+  };
+}