Bug: 21118563 Change-Id: I13c6a44f61668be8b4c1fde8c84dcfebab84517c
Allows for easy determination of whether there's a hardware module in place. Permits tighter coupling of software implementation with upper-level stack. Bug:21090356 Change-Id: I275b57cd976c233c43c476c5869c5a4b29fbc175