Update s.a.c documentation

Latency:
  - rate-monotonic scheduling
  - power management
  - security kernels

USB digital audio:
  - requirements on OEM
  - debugging over WiFi

Terminology:
  - AVRCP
  - FastCapture
  - jitter
  - overrun
  - panning
  - transducer
  - underrun

Change-Id: Id2138533b80355bdf4ced0619af8e2e3a2f9f0d2
10 files changed