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/include/sound/soc.h b/include/sound/soc.h
index 0d7718f9..08909cc 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -253,6 +253,9 @@
 /* codec register bit access */
 int snd_soc_update_bits(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 snd_soc_test_bits(struct snd_soc_codec *codec, unsigned short reg,
 				unsigned int mask, unsigned int value);