[FM] Add FM_TUNER audio source to support L version FM radio app

[FM] Add FM_TUNER audio source to support L version FM radio app

    1.MediaRecorder.java: Add FM_TUNER audio source type for FM record.
    2.AudioRecord.java: For FM output to the other device,
     (except the headset case), record the FM tuner signal to a track
      and playback the recorded signal by a track.
    3.AudioAttributes.java: Thus we use AudioRecord, need to modify
      setCapturePreset to support MediaRecorder.AudioSource.FM_TUNER.

    Review: https://partner-android-review.git.corp.google.com/#/c/182071

    Signed-off-by: Benson Huang <benson.huang@mediatek.com>
Change-Id: If068d0bbbffb4848887004396a8a8d9bcba1334e