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/applications/blockchains/namecoin/default.nix

@@ -0,0 +1,47 @@
+{ lib, stdenv, fetchFromGitHub, openssl, boost, libevent, autoreconfHook, db4, miniupnpc, eject, pkg-config, qt4, protobuf, qrencode, hexdump
+, withGui }:
+
+stdenv.mkDerivation rec {
+  pname = "namecoin" + lib.optionalString (!withGui) "d";
+  version = "22.0";
+
+  src = fetchFromGitHub {
+    owner = "namecoin";
+    repo = "namecoin-core";
+    rev = "nc${version}";
+    sha256 = "sha256-Z3CLDe0c4IpFPPTie8yoh0kcuvGmiegSgl4ITNSDkgY=";
+  };
+
+  nativeBuildInputs = [
+    autoreconfHook
+    pkg-config
+    hexdump
+  ];
+
+  buildInputs = [
+    openssl
+    boost
+    libevent
+    db4
+    miniupnpc
+    eject
+  ] ++ lib.optionals withGui [
+    qt4
+    protobuf
+    qrencode
+  ];
+
+  enableParallelBuilding = true;
+
+  configureFlags = [
+    "--with-boost-libdir=${boost.out}/lib"
+  ];
+
+  meta = with lib; {
+    description = "Decentralized open source information registration and transfer system based on the Bitcoin cryptocurrency";
+    homepage = "https://namecoin.org";
+    license = licenses.mit;
+    maintainers = with maintainers; [ infinisil ];
+    platforms = platforms.linux;
+  };
+}