audioflinger: exchange AUDIO_SOURCE_HOTWORD with AUDIO_SOURCE_VOICE_RECOGNITION for pre-kitkat blobs.

Change-Id: I6241cf6667c97dfd7fb1c238b1fbadea5cdb863e
Merge "audioflinger: exchange AUDIO_SOURCE_HOTWORD with AUDIO_SOURCE_VOICE_RECOGNITION for pre-kitkat blobs." into cm-11.0
disable camera sounds (3/3)

Change-Id: Iff4eb5ca7dd13038bf852a76d0c605814864497a
Signed-off-by: Jonathan Steadman <xxwhitehawk@gmail.com>
screenrecord: Add audio support

Adds audio recording to the screenrecord system. Note that
while recording, the audio is muted from the device output,
and that the audio volume is controlled separately (so make
sure to turn up your volume if you hear nothing).
Audio from the microphone can also be recorded by adding
--microphone to the command line.

Change-Id: I97dfcaf3d93b786c5466e1f4215549e3d015bcf0
screenrecord: Enable SUBMIX_IN as well and cleanup on exit

While on Nexus 5/Nexus 7 (AOSP QCOM audio), trying to turn on
SUBMIX_IN fails and is not needed, it is required on Find 5
and N1 (CAF QCOM audio), or otherwise SUBMIX_OUT won't turn
on.
We also now release the audio routing as it wouldn't revive
the audio speakers otherwise.

Change-Id: I0f80a232304733e0b0a834b188b8cfa5b88915f3