Just add the PCI ID for the STX II.  It appears to work the same as the
STX, except for the addition of the not-yet-supported daughterboard.

Tested-by: Mario <fugazzi99@gmail.com>
Tested-by: corubba <corubba@gmx.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>