ivi-shell: hmi-controller supports multi screens at fullscreen mode.
ivi-shell: hmi-controller supports multi screens at fullscreen mode.

It shows ivi applications in fullscreen per screen like,
The first screen: Application 1,4,5,6,,,,
The seconed screen: Application 2,
The third screen: Application 3

Thie mode assigns one application to each screen at first. And remaind
applications more than screens will be assigned to the first screen.

Signed-off-by: Nobuhiko Tanibata <92313f26b3566e64b50391ce0051fc0e1f775402@xddp.denso.co.jp>
Reviewed-by: Pekka Paalanen <0f6ae7001e34c37b02fb2c1c2573ddf8f442136a@collabora.co.uk>

giucam/weston,Gnurou/weston,krezovic/weston,krezovic/weston,Gnurou/weston,sir-murray/weston,Fantu/compositor-spice,giucam/weston,Fantu/compositor-spice,sir-murray/weston,Fantu/compositor-spice