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/embedded/rshell/default.nix

@@ -0,0 +1,31 @@
+{ lib
+, buildPythonApplication
+, fetchPypi
+, pyserial
+, pyudev
+, pythonOlder
+}:
+
+buildPythonApplication rec {
+  pname = "rshell";
+  version = "0.0.31";
+
+  disabled = pythonOlder "3.4";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "7942b758a9ae5c6ff46516b0317f437dfce9f0721f3a3b635ebd501c9cd38fb9";
+  };
+
+  propagatedBuildInputs = [
+    pyserial
+    pyudev
+  ];
+
+  meta = with lib; {
+    homepage = "https://github.com/dhylands/rshell";
+    description = "Remote Shell for MicroPython";
+    license = licenses.mit;
+    maintainers = with maintainers; [ c0deaddict ];
+  };
+}