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/rpcbind/default.nix

@@ -0,0 +1,39 @@
+{ fetchgit, lib, stdenv, pkg-config, libnsl, libtirpc, autoreconfHook
+, useSystemd ? true, systemd }:
+
+stdenv.mkDerivation {
+  pname = "rpcbind";
+  version = "1.2.6";
+
+  src = fetchgit {
+    url = "git://git.linux-nfs.org/projects/steved/rpcbind.git";
+    rev = "c0c89b3bf2bdf304a5fe3cab626334e0cdaf1ef2";
+    sha256 = "sha256-aidETIZaQYzC3liDGM915wyBWpMrn4OudxEcFS/Iucw=";
+  };
+
+  patches = [
+    ./sunrpc.patch
+  ];
+
+  buildInputs = [ libnsl libtirpc ]
+             ++ lib.optional useSystemd systemd;
+
+  configureFlags = [
+    "--with-systemdsystemunitdir=${if useSystemd then "${placeholder "out"}/etc/systemd/system" else "no"}"
+    "--enable-warmstarts"
+    "--with-rpcuser=rpc"
+  ];
+
+  nativeBuildInputs = [ autoreconfHook pkg-config ];
+
+  meta = with lib; {
+    description = "ONC RPC portmapper";
+    license = licenses.bsd3;
+    platforms = platforms.unix;
+    homepage = "https://linux-nfs.org/";
+    maintainers = with maintainers; [ abbradar ];
+    longDescription = ''
+      Universal addresses to RPC program number mapper.
+    '';
+  };
+}