ASoC: samsung: Initialise DMA data at device probe time

This is a minor simplification and will help with converting the platform
to use the dmaengine helpers.

Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index b302f3b..3e08b6c 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -702,13 +702,6 @@
 	}
 	writel(mod, i2s->addr + I2SMOD);
 
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-		snd_soc_dai_set_dma_data(dai, substream,
-			(void *)&i2s->dma_playback);
-	else
-		snd_soc_dai_set_dma_data(dai, substream,
-			(void *)&i2s->dma_capture);
-
 	i2s->frmclk = params_rate(params);
 
 	return 0;
@@ -970,6 +963,8 @@
 	}
 	clk_prepare_enable(i2s->clk);
 
+	snd_soc_dai_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture);
+
 	if (other) {
 		other->addr = i2s->addr;
 		other->clk = i2s->clk;