[ALSA] hda-codec - Fix Master volume on HP dv8000

HP dv8000 laptop has a problem with Master volume.  It's due to the
connection of the widget 0x13.  When it's connected from the analog
amp mixer (0x19), it works as expected mysteriously (ALSA bug#3775):
	https://bugtrack.alsa-project.org/alsa-bug/view.php?id=3775Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_conexant.c

@@ -1230,6 +1230,11 @@ static struct hda_verb cxt5047_toshiba_init_verbs[] = {
 static struct hda_verb cxt5047_hp_init_verbs[] = {
 	/* pin sensing on HP jack */
 	{0x13, AC_VERB_SET_UNSOLICITED_ENABLE, AC_USRSP_EN | CONEXANT_HP_EVENT},
+	/* 0x13 is actually shared by both HP and speaker;
+	 * setting the connection to 0 (=0x19) makes the master volume control
+	 * working mysteriouslly...
+	 */
+	{0x13, AC_VERB_SET_CONNECT_SEL, 0x0},
 	/* Record selector: Ext Mic */
 	{0x12, AC_VERB_SET_CONNECT_SEL,0x03},
 	{0x19, AC_VERB_SET_AMP_GAIN_MUTE,