ASoC: Include header file in cs4270 and wm9705

Ensures that the DAI and socdev exported by the codec match up with
their exported prototype.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/wm9705.c b/sound/soc/codecs/wm9705.c
index 5e1937a..d5c81bb 100644
--- a/sound/soc/codecs/wm9705.c
+++ b/sound/soc/codecs/wm9705.c
@@ -20,6 +20,8 @@
 #include <sound/soc.h>
 #include <sound/soc-dapm.h>
 
+#include "wm9705.h"
+
 /*
  * WM9705 register cache
  */