ASoC: SOF: IPC: Add new IPC command to free trace DMA

Add a new SOF_IPC_TRACE_DMA_FREE IPC command to stop and free trace DMA
in the FW.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20211102101019.14037-2-peter.ujfalusi@linux.intel.comSigned-off-by: Mark Brown <broonie@kernel.org>

include/sound/sof/header.h

@@ -119,6 +119,7 @@
 #define SOF_IPC_TRACE_DMA_POSITION		SOF_CMD_TYPE(0x002)
 #define SOF_IPC_TRACE_DMA_PARAMS_EXT		SOF_CMD_TYPE(0x003)
 #define SOF_IPC_TRACE_FILTER_UPDATE		SOF_CMD_TYPE(0x004) /**< ABI3.17 */
+#define SOF_IPC_TRACE_DMA_FREE		SOF_CMD_TYPE(0x005) /**< ABI3.20 */
 
 /* debug */
 #define SOF_IPC_DEBUG_MEM_USAGE			SOF_CMD_TYPE(0x001)