keyguard: fix-fix layout for sw320dp devices

Default values need to be defined in sw360dp or larger devices will
pick up sw320dp values automatically.

On the maguro device the keyguard isn't properly centered.

- Before http://review.cyanogenmod.org/54758:
    http://i.imgur.com/F6sokhA.jpg
- After http://review.cyanogenmod.org/54758:
    http://i.imgur.com/OdTkZLL.jpg
- With this commit:
    http://i.imgur.com/TThq9da.jpg

Change-Id: Idcc29ec79a12e61b26d2ad5070468e70a8ef39df
Merge "keyguard: fix-fix layout for sw320dp devices" into cm-11.0