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/tools/admin/aws-mfa/default.nix

@@ -0,0 +1,34 @@
+{ lib
+, buildPythonApplication
+, fetchFromGitHub
+, boto3
+}:
+
+buildPythonApplication rec {
+  pname = "aws-mfa";
+  version = "0.0.12";
+
+  src = fetchFromGitHub {
+    owner = "broamski";
+    repo = "aws-mfa";
+    rev = version;
+    sha256 = "1blcpa13zgyac3v8inc7fh9szxq2avdllx6w5ancfmyh5spc66ay";
+  };
+
+  propagatedBuildInputs = [
+    boto3
+  ];
+
+  doCheck = false;
+
+  pythonImportsCheck = [
+    "awsmfa"
+  ];
+
+  meta = with lib; {
+    description = "Manage AWS MFA Security Credentials";
+    homepage = "https://github.com/broamski/aws-mfa";
+    license = [ licenses.mit ];
+    maintainers = [ maintainers.srapenne ];
+  };
+}