ASoC: Intel: catpt: Synchronize stream access

Streams may have individual controls assigned to them e.g.: volume
control in case of offload streams.

If such a stream is running and simultaneously its controls are being
manipulated, both processes are touching the exact same descriptors -
access to these must be synchronized. Replace spinlock with mutex as
IPCs are non-atomic operations and add proper locking for all
->stream_list users.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://patch.msgid.link/20260309091605.896307-2-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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