ASoC: Need to convert wm5100 cache sync to direct regmap usage too

ASoC knows nothing about the cache now.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/wm5100.c b/sound/soc/codecs/wm5100.c
index b2d1f80..340ffe2 100644
--- a/sound/soc/codecs/wm5100.c
+++ b/sound/soc/codecs/wm5100.c
@@ -1400,7 +1400,7 @@
 				break;
 			}
 
-			snd_soc_cache_sync(codec);
+			regcache_sync(wm5100->regmap);
 		}
 		break;