ASoC: Remove superfluous snd_dma_continuous_data()

The recent change (commit 08422d2c: "ALSA: memalloc: Allow NULL
device for SNDRV_DMA_TYPE_CONTINOUS type") made the PCM preallocation
helper accepting NULL as the device pointer for the default usage.
Drop the snd_dma_continuous_data() usage that became superfluous from
the callers.
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20191108094641.20086-2-tiwai@suse.deSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/soc/au1x/dma.c

@@ -293,7 +293,7 @@ static int alchemy_pcm_new(struct snd_soc_component *component,
 	struct snd_pcm *pcm = rtd->pcm;
 
 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
-		snd_dma_continuous_data(GFP_KERNEL), 65536, (4096 * 1024) - 1);
+					      NULL, 65536, (4096 * 1024) - 1);
 
 	return 0;
 }

sound/soc/dwc/dwc-pcm.c

@@ -258,7 +258,7 @@ static int dw_pcm_new(struct snd_soc_component *component,
 
 	snd_pcm_lib_preallocate_pages_for_all(rtd->pcm,
 			SNDRV_DMA_TYPE_CONTINUOUS,
-			snd_dma_continuous_data(GFP_KERNEL), size, size);
+			NULL, size, size);
 	return 0;
 }
 

sound/soc/sh/dma-sh7760.c

@@ -309,7 +309,7 @@ static int camelot_pcm_new(struct snd_soc_component *component,
 	 */
 	snd_pcm_lib_preallocate_pages_for_all(pcm,
 		SNDRV_DMA_TYPE_CONTINUOUS,
-		snd_dma_continuous_data(GFP_KERNEL),
+		NULL,
 		DMABRG_PREALLOC_BUFFER,	DMABRG_PREALLOC_BUFFER_MAX);
 
 	return 0;