ASoC: SOF: ipc4-topology: Add support for 8-bit formats

This patch enables use of 8-bit unsigned, A-law, and mu-law
sample formats with IPC4 SOF.

The ipc4-topology.h is updated with IPC4 sample types. The
purpose is to convert ALSA types to IPC4 types.

The functions of_ipc4_update_hw_params(), sof_ipc4_get_valid_bits(),
and new function sof_ipc4_get_sample_type() are updated to handle
the sample type conversions.

The function sof_ipc4_prepare_copier_module() is updated to set
the DMA SCS bit for all non 32 bits sample types.

The change to function sof_ipc4_get_valid_bits() returns 8 bits
for these ALSA formats.

The change to function sof_ipc4_prepare_copier_module() is
needed to handle properly all non 32-bit formats with SCS
bit set.

To support playback with new 8 bits types, the
sof_ipc4_init_input_audio_fmt() function is updated to get
the sample type and use it in search for copier input pin
format.

To support capture, the sof_ipc4_init_output_audio_fmt()
is updated similarly. Since the function uses separate
out_ref_type argument, instead of single parameters struct,
the out_ref_type needs to be added to every user of the
function. Therefore functions sof_ipc4_prepare_copier_module(),
sof_ipc4_prepare_gain_module(), sof_ipc4_prepare_mixer_module(),
sof_ipc4_prepare_src_module(), and sof_ipc4_prepare_process_module()
are updated to set the out_ref_type.

Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Liam Girdwood <liam.r.girdwood@intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Message-ID: <20250829105305.31818-3-peter.ujfalusi@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>