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>

sound/soc/fsl/fsl_ssi_dbg.c

@@ -146,7 +146,7 @@ int fsl_ssi_debugfs_create(struct fsl_ssi_dbg *ssi_dbg, struct device *dev)
 	if (!ssi_dbg->dbg_dir)
 		return -ENOMEM;
 
-	ssi_dbg->dbg_stats = debugfs_create_file("stats", S_IRUGO,
+	ssi_dbg->dbg_stats = debugfs_create_file("stats", 0444,
 						 ssi_dbg->dbg_dir, ssi_dbg,
 						 &fsl_ssi_stats_ops);
 	if (!ssi_dbg->dbg_stats) {