ASoC: Fix reg_cache_size for stac9766

reg_cache_size is supposed to be the number of elements in the register cache,
not the size in bytes.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/stac9766.c

@@ -379,7 +379,7 @@ static struct snd_soc_codec_driver soc_codec_dev_stac9766 = {
 	.remove = stac9766_codec_remove,
 	.suspend = stac9766_codec_suspend,
 	.resume = stac9766_codec_resume,
-	.reg_cache_size = sizeof(stac9766_reg),
+	.reg_cache_size = ARRAY_SIZE(stac9766_reg),
 	.reg_word_size = sizeof(u16),
 	.reg_cache_step = 2,
 	.reg_cache_default = stac9766_reg,