EQ FIR: Changes to support Xtensa optimized versions and updated IPC

This patch add possibility to use two samples per call processed
filter core. The use of optimized version depends on FIR core header
files settings. Normally when compiled with xt-xcc the optimized filter
version will be used.

The set data and get data IPC is updated to use binary and enum control
commands.

A pass-trough copy function is added get working pipeline with
non-configured EQ.

The full-circular EQ copy function is needed since it is unnecessary.
Normal SOF components work with buffers

EQ mute is removed since SOF components do not usually support it except
volume.

The IPC is updated to match ALSA binary and enum controls style. The
previous approach was not practical for kernel driver side.

Code style is updated the pass the checks.

Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>

Author: singalsu