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/smmap/default.nix

@@ -0,0 +1,19 @@
+{ lib, fetchPypi, buildPythonPackage, nosexcover }:
+
+buildPythonPackage rec {
+  pname = "smmap";
+  version = "5.0.0";
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "c840e62059cd3be204b0c9c9f74be2c09d5648eddd4580d9314c3ecde0b30936";
+  };
+
+  checkInputs = [ nosexcover ];
+
+  meta = {
+    description = "A pure python implementation of a sliding window memory map manager";
+    homepage = "https://github.com/gitpython-developers/smmap";
+    maintainers = [ ];
+    license = lib.licenses.bsd3;
+  };
+}