ASoC: wm0010: Set idle_bias_off

Doesn't make any practical difference given that _SUSPEND and _OFF are
equivalent for the driver but it's what we're really doing.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/wm0010.c b/sound/soc/codecs/wm0010.c
index b6f7097..61ec763 100644
--- a/sound/soc/codecs/wm0010.c
+++ b/sound/soc/codecs/wm0010.c
@@ -726,6 +726,7 @@
 	.probe = wm0010_probe,
 	.set_bias_level = wm0010_set_bias_level,
 	.set_sysclk = wm0010_set_sysclk,
+	.idle_bias_off = true,
 
 	.dapm_widgets = wm0010_dapm_widgets,
 	.num_dapm_widgets = ARRAY_SIZE(wm0010_dapm_widgets),