Framework: Add Landscape layout for ECA

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

Change-Id: Ia8ce0d89814f99a2b9ec6078a301502e34a035b0
MountService: Add support for multiple storage configurations

Currently AOSP only supports a single storage configuration that is hardcoded
in storage_list.xml. Some device updates are now merging data and internal
storage partitions, and as a result require the storage list to support two
different variations.

By utilizing the sys.storage_legacy property this will allow for the framework
to support multiple configurations which can be determined during boot.

Change-Id: Id795520425ea3e99a5234e10c978dcdbd68a1311
Revert "Update clear all drawables"

This reverts commit b7ecc7fb6af97e6d3d7dc485d21d0b0966c2100f.