a first / the first
procedure / function

Signed-off-by: Marcin Szkudlinski <[email protected]>

is_shared is a flag indicating that a buffer is shared
between cores.
This property is common for all types of audio buffers and
should be kept in a base structure

Signed-off-by: Marcin Szkudlinski <[email protected]>

hw_params_configured is a flag indicating that a buffer params has
been already set, and should be kept in the same structure as the
params themselves

this commit moves hw_params_configured to sof_audio_stream_params
and introduces API to handle the flag

Signed-off-by: Marcin Szkudlinski <[email protected]>

walking flag is not really needed for data buffering,
rather for pipeline iteration procedures, so it should
not be in sof_audio_buffer structure. But before in order
to make possible usage of other buffer types than comp_buffer
before pipeline2.0 is ready, it must be kept there.

Signed-off-by: Marcin Szkudlinski <[email protected]>

chmap is a parameter common for all types of buffers, should be
accessible through sink/src api, so it needs to be kept in
sof_audio_stream_params

an API inroduced for accessing the parameter

Signed-off-by: Marcin Szkudlinski <[email protected]>