ALSA: pcm_dmaengine: Use the available wrapper to get physical width

params_physical_width() is available via pcm_params.h

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

sound/core/pcm_dmaengine.c

@@ -65,7 +65,7 @@ int snd_hwparams_to_dma_slave_config(const struct snd_pcm_substream *substream,
 	enum dma_slave_buswidth buswidth;
 	int bits;
 
-	bits = snd_pcm_format_physical_width(params_format(params));
+	bits = params_physical_width(params);
 	if (bits < 8 || bits > 64)
 		return -EINVAL;
 	else if (bits == 8)