ALSA: hda - VIA: Add support for VT1802

Add support for VT1802 codec, which is similiar with VT2002P
except VT1802 has no Class-D and has some different pin widget
id.

Signed-off-by: Lydia Wang <lydiawang@viatech.com.cn>
Signed-off-by: Takashi Iwai <tiwai@suse.de>