Return a new ``<p:sp>`` element tree configured as a base auto shape.

def new_autoshape_sp(id_, name, prst, left, top, width, height):
        """
        Return a new ``<p:sp>`` element tree configured as a base auto shape.
        """
        tmpl = CT_Shape._autoshape_sp_tmpl()
        xml = tmpl % (id_, name, left, top, width, height, prst)
        sp = parse_xml(xml)
        return sp