ALSA: hda - Remove unused defines and struct fields in patch_via.c

#define NID_MAPPING		(-1)

/* amp values */

#define AMP_VAL_IDX_SHIFT	19

#define AMP_VAL_IDX_MASK	(0x0f<<19)

/* Pin Widget NID */

#define VT1708_HP_NID		0x13

#define VT1708_DIGOUT_NID	0x14

#define VT1708_DIGIN_NID	0x16

#define VT1708_DIGIN_PIN	0x26

#define VT1708_HP_PIN_NID	0x20

#define VT1708_CD_PIN_NID	0x24

#define VT1709_HP_DAC_NID	0x28

#define VT1709_DIGOUT_NID	0x13

#define VT1709_DIGIN_NID	0x17

#define VT1709_DIGIN_PIN	0x25

#define VT1708B_HP_NID		0x25

#define VT1708B_DIGOUT_NID	0x12

#define VT1708B_DIGIN_NID	0x15

#define VT1708B_DIGIN_PIN	0x21

#define VT1708S_HP_NID		0x25

#define VT1708S_DIGOUT_NID	0x12

#define VT1702_HP_NID		0x17

#define VT1702_DIGOUT_NID	0x11

enum VIA_HDA_CODEC {

	UNKNOWN = -1,

	VT1708,

	hda_nid_t mux_nids[3];

	hda_nid_t aa_mix_nid;

	hda_nid_t dig_in_nid;

	hda_nid_t dig_in_pin;

	/* capture source */

	const struct hda_input_mux *input_mux;