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/pyspiflash/default.nix

@@ -0,0 +1,31 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pyftdi
+}:
+
+buildPythonPackage rec {
+  pname = "pyspiflash";
+  version = "0.6.3";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "0ifnw1qm4nssb03af93qw6vpa92rmyc2hisw9m4043pm9ryqcmpc";
+  };
+
+  propagatedBuildInputs = [
+    pyftdi
+  ];
+
+  # tests are not shipped with the PyPI source
+  doCheck = false;
+
+  pythonImportsCheck = [ "spiflash" ];
+
+  meta = with lib; {
+    description = "SPI data flash device drivers in Python";
+    homepage = "https://github.com/eblot/pyspiflash";
+    license = with licenses; [ mit ];
+    maintainers = with maintainers; [ fab ];
+  };
+}