ASoC: Staticise non-exported symbols in SGTL5000

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c
index b528f97..b7e97c0 100644
--- a/sound/soc/codecs/sgtl5000.c
+++ b/sound/soc/codecs/sgtl5000.c
@@ -124,7 +124,7 @@
 	REGULATOR_SUPPLY(LDO_CONSUMER_NAME, NULL),
 };
 
-struct regulator_init_data ldo_init_data = {
+static struct regulator_init_data ldo_init_data = {
 	.constraints = {
 		.min_uV                 = 850000,
 		.max_uV                 = 1600000,
@@ -946,7 +946,7 @@
 			SNDRV_PCM_FMTBIT_S24_LE |\
 			SNDRV_PCM_FMTBIT_S32_LE)
 
-struct snd_soc_dai_ops sgtl5000_ops = {
+static struct snd_soc_dai_ops sgtl5000_ops = {
 	.hw_params = sgtl5000_pcm_hw_params,
 	.digital_mute = sgtl5000_digital_mute,
 	.set_fmt = sgtl5000_set_dai_fmt,
@@ -1421,7 +1421,7 @@
 	return 0;
 }
 
-struct snd_soc_codec_driver sgtl5000_driver = {
+static struct snd_soc_codec_driver sgtl5000_driver = {
 	.probe = sgtl5000_probe,
 	.remove = sgtl5000_remove,
 	.suspend = sgtl5000_suspend,