[ALSA] Add AD1986 support

AC97 Codec
Added the support of AD1986.  Using the same patch as AD1985.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/ac97/ac97_codec.c

@@ -103,6 +103,7 @@ static const ac97_codec_id_t snd_ac97_codec_ids[] = {
 { 0x41445372, 0xffffffff, "AD1981A",		patch_ad1981a,	NULL },
 { 0x41445374, 0xffffffff, "AD1981B",		patch_ad1981b,	NULL },
 { 0x41445375, 0xffffffff, "AD1985",		patch_ad1985,	NULL },
+{ 0x41445378, 0xffffffff, "AD1986",		patch_ad1985,	NULL },
 { 0x414c4300, 0xffffff00, "ALC100/100P", 	NULL,		NULL },
 { 0x414c4710, 0xfffffff0, "ALC200/200P",	NULL,		NULL },
 { 0x414c4721, 0xffffffff, "ALC650D",		NULL,	NULL }, /* already patched */