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/servers/mail/postfix/pflogsumm.nix

@@ -0,0 +1,34 @@
+{ lib, fetchurl, perlPackages }:
+
+perlPackages.buildPerlPackage rec {
+  pname = "pflogsumm";
+  version = "1.1.3";
+
+  src = fetchurl {
+    url = "https://jimsun.linxnet.com/downloads/${pname}-${version}.tar.gz";
+    sha256 = "0hkim9s5f1yg5sfs5048jydhy3sbxafls496wcjk0cggxb113py4";
+  };
+
+  outputs = [ "out" "man" ];
+  buildInputs = [ perlPackages.DateCalc ];
+
+  preConfigure = ''
+    touch Makefile.PL
+  '';
+  doCheck = false;
+
+  installPhase = ''
+    mkdir -p "$out/bin"
+    mv "pflogsumm.pl" "$out/bin/pflogsumm"
+
+    mkdir -p "$out/share/man/man1"
+    mv "pflogsumm.1" "$out/share/man/man1"
+  '';
+
+  meta = {
+    homepage = "http://jimsun.linxnet.com/postfix_contrib.html";
+    maintainers = with lib.maintainers; [ schneefux ];
+    description = "Postfix activity overview";
+    license = lib.licenses.gpl2Plus;
+  };
+}