ALSA: Allow to pass the device object to snd_register_device*()

This is a preliminary patch for the further work on embedding struct
device into each sound device instance.  It changes
snd_register_device*() helpers to receive the device object directly
for skipping creating a device there.

Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

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

diff --cc sound/core/hwdep.c
Simple merge

diff --cc sound/core/pcm.c
Simple merge

diff --cc sound/core/sound.c
Simple merge