ASoC: SOF: topology: add cpu_dai_name for DAIs

Add the cpu_dai_name member to snd_sof_dai and save the
cpu_dai_name while setting the DAI config.

The internal SOF representation will have to change at a later point
as well when we have multiple CPU dais.

Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sof/sof-priv.h

@@ -337,6 +337,7 @@ struct snd_sof_route {
 struct snd_sof_dai {
 	struct snd_sof_dev *sdev;
 	const char *name;
+	const char *cpu_dai_name;
 
 	struct sof_ipc_comp_dai comp_dai;
 	struct sof_ipc_dai_config *dai_config;

sound/soc/sof/topology.c

@@ -2360,6 +2360,9 @@ static int sof_set_dai_config(struct snd_sof_dev *sdev, u32 size,
 			if (!dai->dai_config)
 				return -ENOMEM;
 
+			/* set cpu_dai_name */
+			dai->cpu_dai_name = link->cpus->dai_name;
+
 			found = 1;
 		}
 	}
@@ -2624,6 +2627,8 @@ static int sof_link_hda_process(struct snd_sof_dev *sdev,
 			if (!sof_dai->dai_config)
 				return -ENOMEM;
 
+			sof_dai->cpu_dai_name = link->cpus->dai_name;
+
 			/* send message to DSP */
 			ret = sof_ipc_tx_message(sdev->ipc,
 						 config->hdr.cmd, config, size,