atspi: fix parent-child relationship for elm_list and elm_toolbar

atspi: fix parent-child relationship for elm_list and elm_toolbar

Summary:
This patch provides proper parent-child relationship for elm_list and elm_toolbar
while atsapi_mode is set for icon and end element.

This patch is moved from:
    bf188e59431ad9c4ca877b2632884d3d430de6b1

Change-Id: Iae855aacf29bef3808a0b5ec159f46cbf0f4539d

Reviewers: stanluk, cedric

Reviewed By: cedric

Subscribers: cedric, jpeg

Differential Revision: https://phab.enlightenment.org/D4259

Signed-off-by: Cedric BAIL <cedric@osg.samsung.com>