ALSA: intel8x0: Mute External Amplifier by default for another Sony model

BugLink: https://bugs.launchpad.net/bugs/474972

This Sony model needs External Amplifier muted for audible playback, so
make sure we set the inv_eapd quirk.
Signed-off-by: NDaniel T Chen <crimsun@ubuntu.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/pci/intel8x0.c

@@ -1948,6 +1948,12 @@ static struct ac97_quirk ac97_quirks[] __devinitdata = {
 		.name = "HP xw4200",	/* AD1981B*/
 		.type = AC97_TUNE_HP_ONLY
 	},
+	{
+		.subvendor = 0x104d,
+		.subdevice = 0x8144,
+		.name = "Sony",
+		.type = AC97_TUNE_INV_EAPD
+	},
 	{
 		.subvendor = 0x104d,
 		.subdevice = 0x8197,