libhardware: Add new APIs to support effects with DirectTrack

Change-Id: I4d931bfafae58410e73ea3164fc6c879057b1f88
Merge "libhardware: Add new APIs to support effects with DirectTrack"
Update copyright to The Linux Foundation

Change-Id: Iab3cfd9aa1e67379428e1ddd4b73d6b5eef1014e
Allow hal to write using MMAP interface.

CRs-Fixed: 436629
Change-Id: I8e1e823918bf725367cc39f5a9b15e0eb8fd94e0
Merge "Allow hal to write using MMAP interface."