ASoC: sn95031: Staticize sn95031_pcm_hw_params

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Vinod Koul <vinod.koul@linux.intel.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/sn95031.c b/sound/soc/codecs/sn95031.c
index b4f1cb4..29945b0 100644
--- a/sound/soc/codecs/sn95031.c
+++ b/sound/soc/codecs/sn95031.c
@@ -658,7 +658,7 @@
 	return 0;
 }
 
-int sn95031_pcm_hw_params(struct snd_pcm_substream *substream,
+static int sn95031_pcm_hw_params(struct snd_pcm_substream *substream,
 		struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
 {
 	unsigned int format, rate;