post_proc: Offload effects combined patchset

* Support effects in DSP for tunnel mode playback

Add interface to support configuring equlaizer, bass boost,
virtualizer and reverb effects in DSP for tunnel mode of
playback.
(cherry-picked from CAF commit 3eedc004)

* post_proc: Enable effects param in DSP to start effect

-During switch to tunnel playback, offload effects-flags remain
disabled. This stops effects being applied on tunnel playback.
-Send effects enable params to DSP to start effects during switch.

(cherry-picked from CAF commit d02f2cd7)

* post_proc: disable adsp reverb when preset is 'None'

Audio HAL set corresponding preset id into adsp, but doesn't disabe
reverb explicitly when 'None' preset is chosen. However, preset=0
means custom preset in adsp, so adsp won't stop reverb processing.

(cherry-picked from CAF commit 	b27e25f0)

* post_proc: send ENABLE_FLAG directly to offload effect driver

Enable flag should be sent directly through offload effect driver to
adsp whenever bundle receives EFFECT_CMD_ENABLE. Otherwise enablement
will only take effect in adsp after subsequent parameters being set, and
that's not expected.

(cherry-picked from CAF commit d45948e2)

* post_proc: reverb preset id is not mapped correctly

Array index is not correct and causes uninitialized value being used
when 'Plate' is chosen. Correct index to retrieve the right preset id.

(cherry-picked from CAF commit ca2685b2)

* post_proc: disable Bassboost and Virtualizer for certain devices

WFD, Hdmi and usb audio are not intended to be applied with
SA+ bassboost and virtualizer, so add into invalid device list.

(cherry-picked from CAF ee2ff962)

* post_proc: disable effect immediately when routed to invalid devices

Offload effect is still perceived when invalid output device is
connected. We should send disable command immediately once phone is
routed to unexpected device and forbid effect enablement during
temporary disabled state.

(cherry-picked from CAF commit 95d74c22)

* post_proc: Enable reverb in DSP to start effect

During switch to tunnel playback, reverb enable command is not sent to
DSP and causes reverb effect not applied continuously.

Send reverb enable params to DSP to start effects during switch.

(cherry-picked from CAF commit c37c260f)

* post_proc: include audio_effects.h from kernel exported headers

Currently, audio_effects.h header file is included with reference
to the absolute path. Instead, reference it from the kernel
exported headers.

(cherry-picked from CAF commit 090a2aa3)

* hal: Add support for audio effects in DSP for tunnel mode playback

Add support to enable or disable audio post processing  effects
in DSP for tunnel mode playback.

(cherry-picked from CAF commit 1d089167)
Change-Id: I7ead6da4c216fd87e8ca1884811c4e0155053f49