msm7x30: Enable SystemUI flags to optimize performance

We are now using fake shadows and hardware layers.
The wallpaper is now shown again, since the performance
allows it.

Change-Id: If144ddfc291d240b321629ca407c70fa3ac893ec
msm7x30: Mount mmcblk0p2 as /data

Change-Id: Ifc1f1262d44f091d3607a74a02db029c462bd87a