ASoC: dai: Provide interface for setting DMA data at probe time

Allow DMA data to be set at probe time for devices that can do that,
avoiding the need to do it every time we start a stream and supporting
non-DT dmaengine users using the helpers.
Signed-off-by: Mark Brown <broonie@linaro.org>

include/sound/soc-dai.h

@@ -276,6 +276,13 @@ static inline void snd_soc_dai_set_dma_data(struct snd_soc_dai *dai,
 		dai->capture_dma_data = data;
 }
 
+static inline void snd_soc_dai_init_dma_data(struct snd_soc_dai *dai,
+					     void *playback, void *capture)
+{
+	dai->playback_dma_data = playback;
+	dai->capture_dma_data = capture;
+}
+
 static inline void snd_soc_dai_set_drvdata(struct snd_soc_dai *dai,
 		void *data)
 {