ALSA: sparc: Remove superfluous snd_dma_continuous_data()

The recent change (commit 08422d2c: "ALSA: memalloc: Allow NULL
device for SNDRV_DMA_TYPE_CONTINUOUS 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.

Link: https://lore.kernel.org/r/20191105151856.10785-6-tiwai@suse.deSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/sparc/amd7930.c

@@ -777,7 +777,7 @@ static int snd_amd7930_pcm(struct snd_amd7930 *amd)
 	amd->pcm = pcm;
 
 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
-					      snd_dma_continuous_data(GFP_KERNEL),
+					      NULL,
 					      64*1024, 64*1024);
 
 	return 0;

sound/sparc/dbri.c

@@ -2249,7 +2249,7 @@ static int snd_dbri_pcm(struct snd_card *card)
 	strcpy(pcm->name, card->shortname);
 
 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
-					      snd_dma_continuous_data(GFP_KERNEL),
+					      NULL,
 					      64 * 1024, 64 * 1024);
 	return 0;
 }