ALSA: hda - Additional pin nids for STAC92HD71Bx and STAC92HD75Bx codecs

Current code for STAC92HD71Bx and STAC92HD75Bx doesn't consider pin
complexes 0x20 and 0x27. Also for 4 port models, nids 0x0e and 0x0f
are vendor reserved. This commit changes code so it'll consider the
additional pin complexes for models that have it, and avoid reserved
nids to be touched on 4 port models.

Signed-off-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br>
Signed-off-by: Takashi Iwai <tiwai@suse.de>