ALSA: hda: Use model=auto quirk for Sony VAIO VGN-FW170J using ALC262

BugLink: https://bugs.launchpad.net/bugs/478309



The internal microphone on this VAIO model does not work unless the
"auto" quirk is used.

Signed-off-by: Daniel T Chen <crimsun@ubuntu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>