ALSA: hda: enable speaker output for Compaq 6530s/6531s

HP Compaq 6530s and 6531s internal speaker is silence or becomes silence
within 1 minute after fresh boot. It is found that pin 0x1c must be set to
PIN_OUT mode to make the speaker work. This is weird - line-in pin 0x1c and
speaker pin 0x16 seem to be unrelated.

The codec differences before/after patch are:

@@ Node 0x17 [Pin Complex] wcaps 0x40020b:
Pin Default 0x41a6e130: [N/A] Mic at Ext Rear
Conn = Digital, Color = White
DefAssociation = 0x3, Sequence = 0x0
Misc = NO_PRESENCE
- Pin-ctls: 0x24: IN
+ Pin-ctls: 0x40: OUT
@@ Node 0x1c [Pin Complex] wcaps 0x40018d:
Pin Default 0x41813021: [N/A] Line In at Ext Rear
Conn = 1/8, Color = Blue
DefAssociation = 0x2, Sequence = 0x1
- Pin-ctls: 0x24: IN VREF_80
+ Pin-ctls: 0x40: OUT VREF_HIZ
Unsolicited: tag=00, enabled=0
Connection: 1
0x24

Tests show that it won't impact (external) Mic recording.

Reported-by: "Lin, Ming M" <[e-mail]>
Signed-off-by: Wu Fengguang <[e-mail]>
Signed-off-by: Takashi Iwai <[e-mail]>

sound/pci/hda/patch_analog.c

···
 	/* Port-F (int speaker) mixer - route only from analog mixer */
 	{0x0b, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_MUTE(0)},
 	{0x0b, AC_VERB_SET_AMP_GAIN_MUTE, AMP_IN_UNMUTE(1)},
-	/* Port-F pin */
-	{0x16, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_HP},
+	/* Port-F (int speaker) pin */
+	{0x16, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT},
 	{0x16, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE},
+	/* required for compaq 6530s/6531s speaker output */
+	{0x1c, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT},
 	/* Port-C pin - internal mic-in */
 	{0x15, AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_VREF80},
 	{0x14, AC_VERB_SET_AMP_GAIN_MUTE, 0x7002}, /* raise mic as default */