Flo: enable inline kernel building
Add FloParts

Inital implementation: s2w and dt2w support.

Change-Id: I214e02038f3d6d9916ad35ec9dc292011b4eac3a
Use Utils instead su binary for s2w and dt2w and a few minor cleanups

Change-Id: I8489c9570398aec86dbee779e4294d033581b2ff