ASoC: Drop unused state parameter from CODEC suspend callback

The existence of this parameter is purely historical. None of the CODEC drivers
uses it and we always pass in the same value anyway, so it should be safe to
remove it.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/wm8731.c b/sound/soc/codecs/wm8731.c
index c18dee0..8821af7 100644
--- a/sound/soc/codecs/wm8731.c
+++ b/sound/soc/codecs/wm8731.c
@@ -490,7 +490,7 @@
 };
 
 #ifdef CONFIG_PM
-static int wm8731_suspend(struct snd_soc_codec *codec, pm_message_t state)
+static int wm8731_suspend(struct snd_soc_codec *codec)
 {
 	wm8731_set_bias_level(codec, SND_SOC_BIAS_OFF);