ASoC: wm_adsp: Remove duplicate set of kcontrol->iface

Signed-off-by: NRichard Fitzgerald <rf@opensource.wolfsonmicro.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

sound/soc/codecs/wm_adsp.c

@@ -967,7 +967,6 @@ static int wmfw_add_ctl(struct wm_adsp *dsp, struct wm_coeff_ctl *ctl)
 	kcontrol = kzalloc(sizeof(*kcontrol), GFP_KERNEL);
 	if (!kcontrol)
 		return -ENOMEM;
-	kcontrol->iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 
 	kcontrol->name = ctl->name;
 	kcontrol->info = wm_coeff_info;