ASoC: uda134x: Use snd_pcm_hw_constraint_single()

Use the new snd_pcm_hw_constraint_single() helper function instead of
calling snd_pcm_hw_constraint_minmax() with the same value for min and max
to install a constraint that limits the possible configuration values to a
single value. Using snd_pcm_hw_constraint_single() makes the indented
result clearer and is slightly shorter.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/soc/codecs/uda134x.c

@@ -150,14 +150,12 @@ static int uda134x_startup(struct snd_pcm_substream *substream,
 			 master_runtime->sample_bits,
 			 master_runtime->rate);
 
-		snd_pcm_hw_constraint_minmax(substream->runtime,
+		snd_pcm_hw_constraint_single(substream->runtime,
 					     SNDRV_PCM_HW_PARAM_RATE,
-					     master_runtime->rate,
 					     master_runtime->rate);
 
-		snd_pcm_hw_constraint_minmax(substream->runtime,
+		snd_pcm_hw_constraint_single(substream->runtime,
 					     SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
-					     master_runtime->sample_bits,
 					     master_runtime->sample_bits);
 
 		uda134x->slave_substream = substream;