ASoC: SOF: ipc4: add exception node in sof debugfs directory

The exception node is created when FW is ready and clear to
zero when FW post boot.
Signed-off-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20230919092416.4137-6-peter.ujfalusi@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/ipc4.c

@@ -15,6 +15,7 @@
 #include "sof-audio.h"
 #include "ipc4-fw-reg.h"
 #include "ipc4-priv.h"
+#include "ipc4-telemetry.h"
 #include "ops.h"
 
 static const struct sof_ipc4_fw_status {
@@ -598,6 +599,8 @@ static int ipc4_fw_ready(struct snd_sof_dev *sdev, struct sof_ipc4_msg *ipc4_msg
 	sdev->debug_box.offset = snd_sof_dsp_get_window_offset(sdev,
 							SOF_IPC4_DEBUG_WINDOW_IDX);
 
+	sof_ipc4_create_exception_debugfs_node(sdev);
+
 	dev_dbg(sdev->dev, "mailbox upstream 0x%x - size 0x%x\n",
 		inbox_offset, inbox_size);
 	dev_dbg(sdev->dev, "mailbox downstream 0x%x - size 0x%x\n",