Framework: Add Landscape layout for ECA

Now: http://i.imgur.com/R5mfgrb.png
Before: http://i.imgur.com/uHmnv4H.png

Change-Id: Ia8ce0d89814f99a2b9ec6078a301502e34a035b0
[1/2] Add battery level around unlock ring
PS2:
added missing change in KeyguardSelectorView.java

Change-Id: Ia4dbc2335657c096c34349ec67c4adfec0aeb91b