[ALSA] soc/wm8731: Fix stereo mixer controls

Disable the simultaneous load feature for the line in and headphone
out volume registers. This allows left and right volume levels to
be controlled separately.
Signed-off-by: Ville Syrjala <syrjala@sci.fi>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

sound/soc/codecs/wm8731.c

@@ -562,13 +562,13 @@ static int wm8731_init(struct snd_soc_device *socdev)
 
 	/* set the update bits */
 	reg = wm8731_read_reg_cache(codec, WM8731_LOUT1V);
-	wm8731_write(codec, WM8731_LOUT1V, reg | 0x0100);
+	wm8731_write(codec, WM8731_LOUT1V, reg & ~0x0100);
 	reg = wm8731_read_reg_cache(codec, WM8731_ROUT1V);
-	wm8731_write(codec, WM8731_ROUT1V, reg | 0x0100);
+	wm8731_write(codec, WM8731_ROUT1V, reg & ~0x0100);
 	reg = wm8731_read_reg_cache(codec, WM8731_LINVOL);
-	wm8731_write(codec, WM8731_LINVOL, reg | 0x0100);
+	wm8731_write(codec, WM8731_LINVOL, reg & ~0x0100);
 	reg = wm8731_read_reg_cache(codec, WM8731_RINVOL);
-	wm8731_write(codec, WM8731_RINVOL, reg | 0x0100);
+	wm8731_write(codec, WM8731_RINVOL, reg & ~0x0100);
 
 	wm8731_add_controls(codec);
 	wm8731_add_widgets(codec);