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/python-modules/pcpp/default.nix

@@ -0,0 +1,24 @@
+{ buildPythonPackage
+, fetchFromGitHub
+, lib
+}:
+
+buildPythonPackage rec {
+  pname = "pcpp";
+  version = "1.21";
+
+  src = fetchFromGitHub {
+    owner = "ned14";
+    repo = "pcpp";
+    rev = "v${version}";
+    sha256 = "0k52qyxzdngdhyn4sya2qn1w1a4ll0mcla4h4gb1v91fk4lw25dm";
+    fetchSubmodules = true;
+  };
+
+  meta = with lib; {
+    homepage = "https://github.com/ned14/pcpp";
+    description = "A C99 preprocessor written in pure Python";
+    license = licenses.bsd0;
+    maintainers = with maintainers; [ rakesh4g ];
+ };
+}