Dialer: fix cannot search "+86" in smart dial search

Smart dial table only gets phone number from database, not
normalized number, so cannot match "+86" in smart dial search.

Will insert normalized number into smart dial and prefix table
if it's not empty.

Change-Id: I6114a2a29222b9d19617822bab8e533e81a5c5fb
CRs-Fixed: 766356