ALSA: sb8: Remove always NULL parameters

snd_sb8dsp_pcm() and snd_sb8dsp_midi() take a pointer to a pointer of a
PCM/MIDI where if this parameter is provided the newly allocated object is
stored. All callers pass NULL though, so remove the parameter. This makes
the code a bit cleaner and shorter.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --cc include/sound/sb.h
Simple merge

diff --cc sound/isa/sb/jazz16.c
Simple merge

diff --cc sound/isa/sb/sb8.c
Simple merge

diff --cc sound/isa/sb/sb8_main.c
Simple merge

diff --cc sound/isa/sb/sb8_midi.c
Simple merge