[ALSA] Export new register/unregister functions

ALSA Core
Export new register/unregister functions for compat control-ioctls.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/core/sound.c

@@ -467,6 +467,10 @@ EXPORT_SYMBOL(snd_ctl_find_id);
 EXPORT_SYMBOL(snd_ctl_notify);
 EXPORT_SYMBOL(snd_ctl_register_ioctl);
 EXPORT_SYMBOL(snd_ctl_unregister_ioctl);
+#ifdef CONFIG_COMPAT
+EXPORT_SYMBOL(snd_ctl_register_ioctl_compat);
+EXPORT_SYMBOL(snd_ctl_unregister_ioctl_compat);
+#endif
 EXPORT_SYMBOL(snd_ctl_elem_read);
 EXPORT_SYMBOL(snd_ctl_elem_write);
   /* misc.c */