[ALSA] hda-codec - Add quirk for HP Samba

This patch fixes 5.1 surround output for the HP Samba using the same
quirk as the HP Lucknow. If HP machines are uniform in their wiring,
we should rename ALC888_HP_NETTLE to ALC888_6ST_HP and ALC888_HP_LUCKNOW
to ALC888_3ST_HP for generic HP 6stack and 3stack configurations.

Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>