smartdial: increase suggestions from 3 to 6

  AOSP's smartdial implementation shows 3 suggestions at
  most. Which means if there are more than 3 contacts
  with the exact same name, then only 3 will come up
  and the rest will never be shown.

  This increases the limit to 6. I am assuming here that
  people will generally not have more than 6 people in
  their address book with the exact same name. The limit
  can be raised further too, only that the algorithm
  implemented to show the most appropriate match towards
  the beginning has to be finetuned in each case.

UPDATE :
 1. Centered the suggestions
 2. Remove trailing whitespace

Change-Id: I8ca0f1d0fe4d4491110fe8cb617d37c8c34fcea4
Signed-off-by: Arnav Gupta <championswimmer@aokp.co>