Spinner: Add changed callback call when spinner value set.
Spinner: Add changed callback call when spinner value set.

Summary:
There is a code to compare value is changed.
1256: if (sd->val == val) return;

Even value changed the value changed callback didn't called before.

Reviewers: woohyun, shilpasingh, Hermet

Reviewed By: shilpasingh, Hermet

Differential Revision: https://phab.enlightenment.org/D2560

rvandegrift/elementary,rvandegrift/elementary,tasn/elementary,FlorentRevest/Elementary,tasn/elementary,FlorentRevest/Elementary,rvandegrift/elementary,tasn/elementary,tasn/elementary,rvandegrift/elementary,FlorentRevest/Elementary,FlorentRevest/Elementary,tasn/elementary