ASoC: SOF: sof-client: Add sof_client_ipc4_find_swidget_by_id()

Add sof_client_ipc4_find_swidget_by_id() for finding widgets from SOF
client devices. The motivation is to decode probes debugfs output to
be more readable.

Signed-off-by: Jyri Sarha <jyri.sarha@linux.intel.com>
Reviewed-by: Liam Girdwood <liam.r.girdwood@intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Message-ID: <20250829093022.32094-4-peter.ujfalusi@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>