python-modules/trezor: Fix build

Regression introduced by 76beb08.

With version 0.7.15 a few additional dependencies are needed by trezor,
mainly a newer version of protobuf bindings and requests.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Cc: @np

pkgs/development/python-modules/trezor/default.nix

@@ -1,4 +1,6 @@
-{ lib, fetchPypi, buildPythonPackage, protobuf3_0, hidapi, ecdsa, mnemonic }:
+{ lib, fetchPypi, buildPythonPackage, protobuf3_2, hidapi, ecdsa, mnemonic
+, requests
+}:
 
 buildPythonPackage rec {
   name = "${pname}-${version}";
@@ -10,7 +12,7 @@ buildPythonPackage rec {
     sha256 = "f7e4f509263ca172532b4c0a440d164add7cdc021b4370a253d51eba5806b618";
   };
 
-  propagatedBuildInputs = [ protobuf3_0 hidapi ];
+  propagatedBuildInputs = [ protobuf3_2 hidapi requests ];
 
   buildInputs = [ ecdsa mnemonic ];