[ALSA] Clean up EXPORT_SYMBOL()s in snd module

Move EXPORT_SYMBOL()s to places adjacent to functions/variables.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/core/sound_oss.c b/sound/core/sound_oss.c
index 9055c6d..c18f6a4 100644
--- a/sound/core/sound_oss.c
+++ b/sound/core/sound_oss.c
@@ -58,6 +58,8 @@
 	return private_data;
 }
 
+EXPORT_SYMBOL(snd_lookup_oss_minor_data);
+
 static int snd_oss_kernel_minor(int type, struct snd_card *card, int dev)
 {
 	int minor;
@@ -158,6 +160,8 @@
       	return -EBUSY;
 }
 
+EXPORT_SYMBOL(snd_register_oss_device);
+
 int snd_unregister_oss_device(int type, struct snd_card *card, int dev)
 {
 	int minor = snd_oss_kernel_minor(type, card, dev);
@@ -197,6 +201,8 @@
 	return 0;
 }
 
+EXPORT_SYMBOL(snd_unregister_oss_device);
+
 /*
  *  INFO PART
  */