Scroller: paging controls dual focus issue.

Issue: when we switch form 5way mode to pointer mode, hover classes are
not removed on paging controls, due to this paginating controls are
getting dual focus.

Fix: checking the spotlightPagingContrls flag while updating the hover
classes of the controls.

Enyo-DCO-1.1-Signed-off-by: Srinivas V srinivas.v@lge.com