[ALSA] sscape: support for audio part of VIVO cards

This patch adds support for audio part of the Ensoniq
SoundScape VIVO cards. The MIDI part is not supported.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>