ALSA: HDA: hda_local: Less magic numbers.

Explain some of the magic numbers I saw while trying to fix the AD1989 SPDIF
issue. Maybe should just use the expanded form directly in the verbs?
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

sound/pci/hda/hda_local.h

@@ -368,12 +368,15 @@ int snd_hda_parse_pin_def_config(struct hda_codec *codec,
 #define AMP_OUT_UNMUTE	0xb000
 #define AMP_OUT_ZERO	0xb000
 /* pinctl values */
-#define PIN_IN		0x20
-#define PIN_VREF80	0x24
-#define PIN_VREF50	0x21
-#define PIN_OUT		0x40
-#define PIN_HP		0xc0
-#define PIN_HP_AMP	0x80
+#define PIN_IN			(AC_PINCTL_IN_EN)
+#define PIN_VREFHIZ	(AC_PINCTL_IN_EN | AC_PINCTL_VREF_HIZ)
+#define PIN_VREF50		(AC_PINCTL_IN_EN | AC_PINCTL_VREF_50)
+#define PIN_VREFGRD	(AC_PINCTL_IN_EN | AC_PINCTL_VREF_GRD)
+#define PIN_VREF80		(AC_PINCTL_IN_EN | AC_PINCTL_VREF_80)
+#define PIN_VREF100	(AC_PINCTL_IN_EN | AC_PINCTL_VREF_100)
+#define PIN_OUT		(AC_PINCTL_OUT_EN)
+#define PIN_HP			(AC_PINCTL_OUT_EN | AC_PINCTL_HP_EN)
+#define PIN_HP_AMP		(AC_PINCTL_HP_EN)
 
 /*
  * get widget capabilities