audio: Reject incall record request when call is not active

- If application selects AUDIO_SOURCE_VOICE_CALL when voice call is
  not active, audio HAL is selecting afe-proxy use case which is
  wrong. afe-proxy usecase/device expected to be selected during
  USB Voice call scenario only

- Fix is to fail opening the input stream with
  AUDIO_DEVICE_IN_TELEPHONY_RX or AUDIO_DEVICE_IN_VOICE_CALL if
  the call is not active

Change-Id: Iae2d25d192b3b5011dd45816778ffc03d3049449