ASoC: SOF: Add new sof_debug flag to request message payload dump

We only print out the header information of an IPC message in debug level,
either in verbose or non verbose way (Kconfig option).

On top of the header information the message itself can help reproducing
and identifying issues.

BIT(11) can be used to request a message payload dump if it is supported
by the IPC implementation.

Since IPC message payload printing is only implemented for IPC4, the flag
will not have any effect to IPC3 for now.
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20230616100039.378150-5-pierre-louis.bossart@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/sof-priv.h

@@ -48,6 +48,9 @@ struct snd_sof_pcm_stream;
 #define SOF_DBG_FORCE_NOCODEC			BIT(10) /* ignore all codec-related
 							 * configurations
 							 */
+#define SOF_DBG_DUMP_IPC_MESSAGE_PAYLOAD	BIT(11) /* On top of the IPC message header
+							 * dump the message payload also
+							 */
 #define SOF_DBG_DSPLESS_MODE			BIT(15) /* Do not initialize and use the DSP */
 
 /* Flag definitions used for controlling the DSP dump behavior */