ASoC: Set codec->dev for AC97 devices

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 9085b40..ca89c78 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1368,6 +1368,7 @@
 
 	codec->ac97->bus->ops = ops;
 	codec->ac97->num = num;
+	codec->dev = &codec->ac97->dev;
 	mutex_unlock(&codec->mutex);
 	return 0;
 }