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/pxlib/default.nix

@@ -0,0 +1,20 @@
+{ lib, stdenv, fetchurl, intltool }:
+
+stdenv.mkDerivation rec {
+  pname = "pxlib";
+  version = "0.6.8";
+  src = fetchurl {
+    url = "mirror://sourceforge/${pname}/${pname}-${version}.tar.gz";
+    sha256 = "1yafwz4z5h30hqvk51wpgbjlmq9f2z2znvfim87ydrfrqfjmi6sz";
+  };
+
+  nativeBuildInputs = [ intltool ];
+
+  meta = with lib; {
+    description = "Library to read and write Paradox files";
+    homepage = "http://pxlib.sourceforge.net/";
+    license = licenses.gpl2;
+    platforms = platforms.all;
+    maintainers = [ maintainers.winpat ];
+  };
+}