Ring lockscreen (Phone portion).

The original implementation came from CyanogenMod
Author:
Valera Trubachev <vetruvet@gmail.com>

Modded and refreshed by MongooseHelix and PreludeDrew.

Right now there is only one unlock "style" for the phone. We'll revisit
this in the future to add more styles.

Change-Id: I9b0878fe6c2c2af8879d262960777b7ba83b1cce
3 files changed