ALSA: sh: Remove superfluous snd_dma_continuous_data()

The recent change (commit 08422d2: "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/20191105151856.10785-5-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/sh/aica.c

@@ -443,7 +443,7 @@ static int __init snd_aicapcmchip(struct snd_card_aica
 	/* Allocate the DMA buffers */
 	snd_pcm_lib_preallocate_pages_for_all(pcm,
 					      SNDRV_DMA_TYPE_CONTINUOUS,
-					      snd_dma_continuous_data(GFP_KERNEL),
+					      NULL,
 					      AICA_BUFFER_SIZE,
 					      AICA_BUFFER_SIZE);
 	return 0;

sound/sh/sh_dac_audio.c

@@ -268,7 +268,7 @@ static int snd_sh_dac_pcm(struct snd_sh_dac *chip, int device)
 
 	/* buffer size=48K */
 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
-					  snd_dma_continuous_data(GFP_KERNEL),
+					      NULL,
 							48 * 1024,
 							48 * 1024);