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/development/libraries/libqb/default.nix

@@ -0,0 +1,28 @@
+{ lib, stdenv, fetchFromGitHub, autoreconfHook, pkg-config, libxml2 }:
+
+stdenv.mkDerivation rec {
+  pname = "libqb";
+  version = "2.0.6";
+
+  src = fetchFromGitHub {
+    owner = "ClusterLabs";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-vt9FmIRojX3INOn3CXAjkswVFD8Th4sRIz3RR4GJHFQ=";
+  };
+
+  nativeBuildInputs = [ autoreconfHook pkg-config ];
+
+  buildInputs = [ libxml2 ];
+
+  postPatch = ''
+    sed -i '/# --enable-new-dtags:/,/--enable-new-dtags is required/ d' configure.ac
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/clusterlabs/libqb";
+    description = "A library providing high performance logging, tracing, ipc, and poll";
+    license = licenses.lgpl21Plus;
+    platforms = platforms.unix;
+  };
+}