sound: Use octal not symbolic permissions

Convert the S_<FOO> symbolic permissions to their octal equivalents as
using octal and not symbolic permissions is preferred by many as more
readable.

see: https://lkml.org/lkml/2016/8/2/1945

Done with automated conversion via:
$ ./scripts/checkpatch.pl -f --types=SYMBOLIC_PERMS --fix-inplace <files...>

Miscellanea:

o Wrapped one multi-line call to a single line

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/sound_core.c b/sound/sound_core.c
index b4efb22..40ad000 100644
--- a/sound/sound_core.c
+++ b/sound/sound_core.c
@@ -413,7 +413,7 @@ int register_sound_special_device(const struct file_operations *fops, int unit,
 		break;
 	}
 	return sound_insert_unit(&chains[chain], fops, -1, unit, max_unit,
-				 name, S_IRUSR | S_IWUSR, dev);
+				 name, 0600, dev);
 }
  
 EXPORT_SYMBOL(register_sound_special_device);
@@ -440,7 +440,7 @@ EXPORT_SYMBOL(register_sound_special);
 int register_sound_mixer(const struct file_operations *fops, int dev)
 {
 	return sound_insert_unit(&chains[0], fops, dev, 0, 128,
-				 "mixer", S_IRUSR | S_IWUSR, NULL);
+				 "mixer", 0600, NULL);
 }
 
 EXPORT_SYMBOL(register_sound_mixer);
@@ -468,7 +468,7 @@ EXPORT_SYMBOL(register_sound_mixer);
 int register_sound_dsp(const struct file_operations *fops, int dev)
 {
 	return sound_insert_unit(&chains[3], fops, dev, 3, 131,
-				 "dsp", S_IWUSR | S_IRUSR, NULL);
+				 "dsp", 0600, NULL);
 }
 
 EXPORT_SYMBOL(register_sound_dsp);