a5: Update audio configuration

 * Correct audio_policy, use low latency primary

Change-Id: I439137898434695e2528356718f18b67f0cb1c2c
a5: Enable low-latency audio capture

Change-Id: I470dc8fc281093dfe5f77914fa7af4e60daf87c9
a5: Update media codecs and audio properties

Change-Id: Ica481da7b633632575cb6c133ed9133df2dacf03
a5: fix a2dp: set sample rate to 48K

Sets the sample rate for Bluetooth to 48k to fix issue where pausing
music while connected results in about 3 seconds of playback, then
silence, yet still shows as playing.

Change-Id: I3cdfcfb7073d24b32937ee25e7ec2f1243559ec5
a5: Give the ethernet feature.

BUG: 15143878
Change-Id: Ie29c6426e9cec7fbabc2ae40328f448181132f45