hal: Fix arguments passed to set_echo_reference

* set_echo_reference function takes (struct audio_device *, bool) but is
  being passed (struct mixer *, int) instead.

Change-Id: I3b4fab2b2d266eebac0d5bab80f7a377d442d8fa
hal: Fix digital USB headset combo device

 * Digital USB output was not handled in this case. Add it.

Change-Id: I8e984a2cf545dabdc6dc538b75e8ca7221fb6688
Revert "hal: add custom platform abstraction"

* Handle this in a more extensible way with upcoming platform info
  extension code.

This reverts commit 36a435d08826160ddbf9e0759711f7badae42566.

Change-Id: I9683e27b70f591bff6c5131523ef7c3e51ee6513
Revert "hal: Add speaker backend case handling"

* Handle this in a more extensible way with upcoming platform info
  extension code.

This reverts commit 957c3d94bf34da538b3cd296e17b94a9206fd8d1.

Change-Id: Ie0b86bfd8decd92bda76a2706e5ebd7dcedae89b
audio: extend platform parser

Extend platform parser with support for additional sections.
Supported sections now include acdb ids, pcm device ids and backend names.

Change-Id: Idfbc8a8bb490606686436c107db5b0c7d636ccbe
audio: Extend platform parser to allow device name aliasing

* Supported sections now include device names
* This allows for aliasing device names to a custom name

Change-Id: I880e90a7e887f020517d89ba276199c700c0eeae
hal: Fix voice call recording for msm8974

Voice call recording uses audio-record usecase which causes recording
only devices microphone. Use the correct usecase for call recording.

Change-Id: Iaa9fc30534263c6de9b4b66fa5ffa9a1e2cc8fd4
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_hardware_qcom_audio-caf into cm-11.0