ALSA: pcsp: Include appropriate header file in pcsp/pcsp_input.c

Include appropriate header file in drivers/pcsp/pcsp_input.c because it
defines function whose prototype definitions are present in
drivers/pcsp/pcsp_input.h.

This eliminates the following warning in drivers/pcsp/pcsp_input.c:
sound/drivers/pcsp/pcsp_input.c:42:6: warning: no previous prototype for ‘pcspkr_stop_sound’ [-Wmissing-prototypes]
sound/drivers/pcsp/pcsp_input.c:80:5: warning: no previous prototype for ‘pcspkr_input_init’ [-Wmissing-prototypes]
sound/drivers/pcsp/pcsp_input.c:110:5: warning: no previous prototype for ‘pcspkr_input_remove’ [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
ALSA: lx6464es: Remove unused function in pci/lx6464es/lx_core.c

Remove unused function in pci/lx6464es/lx_core.c.

This eliminates the following warning in pci/lx6464es/lx_core.c:
sound/pci/lx6464es/lx_core.c:144:5: warning: no previous prototype for ‘lx_plx_mbox_read’ [-Wmissing-prototypes]
sound/pci/lx6464es/lx_core.c:172:5: warning: no previous prototype for ‘lx_plx_mbox_write’ [-Wmissing-prototypes]
sound/pci/lx6464es/lx_core.c:494:5: warning: no previous prototype for ‘lx_dsp_es_check_pipeline’ [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound: Move prototype declaration to header file oss/pas2.h from oss/pas2_card.c

Move prototype declaration of function to header file oss/pas2.h
from oss/pas2_card.c because it is used by more than one file.

This eliminates the following warnings in oss/pas2_mixer.c:
sound/oss/pas2_mixer.c:62:1: warning: no previous prototype for ‘mix_write’ [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>