[ALSA] hda-intel - Fix microphone capture with ALC880 F1734 model

The default capture source should be the mic which is 0x01 on this model.
In addition to that the change to VREF50 allows for higher capture volume.
Signed-off-by: Michael Gruber <lists.mg@googlemail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_realtek.c

@@ -1927,6 +1927,7 @@ static void alc880_uniwill_p53_unsol_event(struct hda_codec *codec,
  * HP = 0x14, speaker-out = 0x15, mic = 0x18
  */
 static struct hda_verb alc880_pin_f1734_init_verbs[] = {
+	{0x07, AC_VERB_SET_CONNECT_SEL, 0x01},
 	{0x10, AC_VERB_SET_CONNECT_SEL, 0x02},
 	{0x11, AC_VERB_SET_CONNECT_SEL, 0x00},
 	{0x12, AC_VERB_SET_CONNECT_SEL, 0x01},
@@ -1939,7 +1940,7 @@ static struct hda_verb alc880_pin_f1734_init_verbs[] = {
 
 	{0x18, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_VREF80},
 	{0x18, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE},
-	{0x19, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_VREF80},
+	{0x19, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_VREF50},
 	{0x19, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE},
 	{0x1a, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT},
 	{0x1a, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE},