ALSA: hda - Add headset mic pin quirk for a Dell device

Without this patch, the headset mic will not work on this machine.

BugLink: https://bugs.launchpad.net/bugs/1476987


Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>