Add SAD to AudioPort and encapsulation type to AudioProfile.

Short audio descriptor(SAD) is defined in HDMI specification 1.4b
section 7 that is used to describe the audio capabilities over HDMI.

The encapsulation types represent the encapsulation formats that must be
used when sending the audio data with the format associated with the
AudioProfile to Android.

Bug: 131736540
Bug: 178619392
Test: atest AudioManagerTes
Change-Id: Ie9ab83c8147edfe211363d9676e9cb04dda5b489