ASoC: Export snd_soc_update_bits_unlocked()

Allows custom controls to use it.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index ef8f282..8b900a84 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1427,9 +1427,9 @@
  *
  * Returns 1 for change else 0.
  */
-static int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
-				unsigned short reg, unsigned int mask,
-				unsigned int value)
+int snd_soc_update_bits_locked(struct snd_soc_codec *codec,
+			       unsigned short reg, unsigned int mask,
+			       unsigned int value)
 {
 	int change;
 
@@ -1439,6 +1439,7 @@
 
 	return change;
 }
+EXPORT_SYMBOL_GPL(snd_soc_update_bits_locked);
 
 /**
  * snd_soc_test_bits - test register for change