s: move prototype of snd_card_info_read_oss to info.h

info_oss: move prototype of snd_card_info_read_oss to info.h

Signed-off-by: Marcin Åšlusarz <marcin.slusarz@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
J•ªS›