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/imagesize/default.nix

@@ -0,0 +1,21 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+}:
+
+buildPythonPackage rec {
+  pname = "imagesize";
+  version = "1.3.0";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "cd1750d452385ca327479d45b64d9c7729ecf0b3969a58148298c77092261f9d";
+  };
+
+  meta = with lib; {
+    description = "Getting image size from png/jpeg/jpeg2000/gif file";
+    homepage = "https://github.com/shibukawa/imagesize_py";
+    license = with licenses; [ mit ];
+  };
+
+}