ASoC: qcom: sdw: remove redundant code

ASoC: qcom: sdw: remove redundant code

remove redundant code and pointers to handle sdw_stream_runtime by
making use of qcom_snd_sdw_get_stream(). This removes need of machine
specific shutdown and hw_params sdw callbacks and also need to store
sdw_stream_runtime pointers in machine drivers.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@oss.qualcomm.com>
Tested-by: Steev Klimaszewski <threeway@gmail.com> # Thinkpad X13s
Link: https://patch.msgid.link/20251022143349.1081513-3-srinivas.kandagatla@oss.qualcomm.com
Signed-off-by: Mark Brown <broonie@kernel.org>