ASoC: spear: use helper function

Current ASoC has many helper function.
This patch use it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87wn53ea4i.wl-kuninori.morimoto.gx@renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/spear/spdif_out.c

@@ -244,7 +244,8 @@ static int spdif_soc_dai_probe(struct snd_soc_dai *dai)
 	struct spdif_out_dev *host = snd_soc_dai_get_drvdata(dai);
 
 	host->dma_params_tx.filter_data = &host->dma_params;
-	dai->playback_dma_data = &host->dma_params_tx;
+
+	snd_soc_dai_dma_data_set_playback(dai, &host->dma_params_tx);
 
 	return snd_soc_add_dai_controls(dai, spdif_out_controls,
 				ARRAY_SIZE(spdif_out_controls));