ALSA: virtuoso: add Xonar Essence STX II support

commit f42bb22243d2ae264d721b055f836059fe35321f upstream.

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>
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>