ALSA: gus: Remove always NULL parameters

snd_gf1_pcm_new() and snd_gf1_rawmidi_new() 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/gus.h
Simple merge

diff --cc sound/isa/gus/gus_pcm.c
Simple merge

diff --cc sound/isa/gus/gus_uart.c
Simple merge

diff --cc sound/isa/gus/gusclassic.c
Simple merge

diff --cc sound/isa/gus/gusextreme.c
Simple merge

diff --cc sound/isa/gus/gusmax.c
Simple merge

diff --cc sound/isa/gus/interwave.c
Simple merge