Subject says it all. Briefly, use hp_only for another Dell Inspiron 8600.
Reference: Ubuntu #41015 (https://launchpad.net/bugs/41015)
Signed-off-by: Daniel T Chen <seven.steps@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
                .name = "Dell Unknown", /* STAC9750/51 */
                .type = AC97_TUNE_HP_ONLY
        },
+       {
+               .subvendor = 0x1028,
+               .subdevice = 0x016a,
+               .name = "Dell Inspiron 8600",   /* STAC9750/51 */
+               .type = AC97_TUNE_HP_ONLY
+       },
        {
                .subvendor = 0x1028,
                .subdevice = 0x0186,