Upcoming 60.2.3 mozjs (meta-oe) requires python(2)-six-native for its
configuration. Currently python(2)-six lives in meta-python and it could be
moved to mozjs's home meta-oe but that would be just further clutter.
Once applied here patch to meta-python will be send.
Signed-off-by: Andreas Müller <schnitzeltony@gmail.com>