sound: convert snd_info_register() to use proc_create_data()

sound: convert snd_info_register() to use proc_create_data()

Convert snd_info_register to use proc_create_data instead of
create_proc_entry.  This corrects a sparse warning introduced by "procfs:
Improve Scaling in proc" It is also a bit cleaner to let proc_create_data
set the ->data and ->proc_fops.

Signed-off-by: Nathan Zimmer <nzimmer@sgi.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>