ASoC: wm9081: Fix reading wrong register for setting VMID 2*240k

VMID Divider Enable and Select is controlled by BIT[2:1] of WM9081_VMID_CONTROL
register (04h).
Current code reads wrong register (WM9081_BIAS_CONTROL_1) for setting
VMID 2*240k.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/wm9081.c

@@ -818,7 +818,7 @@ static int wm9081_set_bias_level(struct snd_soc_codec *codec,
 		}
 
 		/* VMID 2*240k */
-		reg = snd_soc_read(codec, WM9081_BIAS_CONTROL_1);
+		reg = snd_soc_read(codec, WM9081_VMID_CONTROL);
 		reg &= ~WM9081_VMID_SEL_MASK;
 		reg |= 0x04;
 		snd_soc_write(codec, WM9081_VMID_CONTROL, reg);