ASoC: Staticise sst_pcm_new and sst_soc_platform_drv

Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Acked-by Vinod Koul <vinod.koul@linux.intel.com>
Acked-by: NLu Guanqun <guanqun.lu@intel.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/mid-x86/sst_platform.c

@@ -443,7 +443,7 @@ static void sst_pcm_free(struct snd_pcm *pcm)
 	snd_pcm_lib_preallocate_free_for_all(pcm);
 }
 
-int sst_pcm_new(struct snd_soc_pcm_runtime *rtd)
+static int sst_pcm_new(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_dai *dai = rtd->cpu_dai;
 	struct snd_pcm *pcm = rtd->pcm;
@@ -463,7 +463,7 @@ int sst_pcm_new(struct snd_soc_pcm_runtime *rtd)
 	}
 	return retval;
 }
-struct snd_soc_platform_driver sst_soc_platform_drv = {
+static struct snd_soc_platform_driver sst_soc_platform_drv = {
 	.ops		= &sst_platform_ops,
 	.pcm_new	= sst_pcm_new,
 	.pcm_free	= sst_pcm_free,