[ALSA] hda-intel: Enable Analog CD Input from internal ATAPI connector on Asus M2N-SLI

Enable Analog CD Input from internal ATAPI connector on Asus M2N-SLI.
Signed-off-by: Johannes Stezenbach <js@sig21.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

sound/pci/hda/patch_analog.c

@@ -2084,6 +2084,8 @@ static struct hda_verb ad1988_6stack_init_verbs[] = {
 	{0x17, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_VREF80},
 	{0x3c, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_ZERO},
 	{0x34, AC_VERB_SET_CONNECT_SEL, 0x0},
+	/* Analog CD Input */
+	{0x18, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_IN},
 
 	{ }
 };