ASoC: Add separate AVDD for WM8400

There is an AVDD supply as well, normally one or more of the other
upplies would be tied to it.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/wm8400.c

@@ -48,6 +48,9 @@ static struct regulator_bulk_data power[] = {
 	{
 		.supply = "DCVDD",
 	},
+	{
+		.supply = "AVDD",
+	},
 	{
 		.supply = "FLLVDD",
 	},