ASoC: Fix incorrect register cache size configuration

The reg_cache_size is the number of elements in the register cache,
not the size of the cache itself. This is not a problem if the size
of each element of the cache is 1 byte but it matters in any other
case.

Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/wm8731.c b/sound/soc/codecs/wm8731.c
index 56f5408..2827501 100644
--- a/sound/soc/codecs/wm8731.c
+++ b/sound/soc/codecs/wm8731.c
@@ -567,7 +567,7 @@
 	.suspend =	wm8731_suspend,
 	.resume =	wm8731_resume,
 	.set_bias_level = wm8731_set_bias_level,
-	.reg_cache_size = sizeof(wm8731_reg),
+	.reg_cache_size = ARRAY_SIZE(wm8731_reg),
 	.reg_word_size = sizeof(u16),
 	.reg_cache_default = wm8731_reg,
 };