importlib isn't currently included in any of the python packages, so
create a new one for recipes that require it.
Cc: Paul Eggleton <paul.eggleton@linux.intel.com>
(From OE-Core rev: b3dae96d9fdb4e26101f6f7edc6e65989375a5a2)
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>