Fixed the following checkpatch warning:
    WARNING: Symbolic permissions 'S_IRUGO' are not preferred. Consider
    using octal permissions '0444'.
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Benson Leung <bleung@chromium.org>
        init_waitqueue_head(&debug_info->log_wq);
 
        if (!debugfs_create_file("console_log",
-                                S_IFREG | S_IRUGO,
+                                S_IFREG | 0444,
                                 debug_info->dir,
                                 debug_info,
                                 &cros_ec_console_log_fops))
        debug_info->panicinfo_blob.size = ret;
 
        if (!debugfs_create_blob("panicinfo",
-                                S_IFREG | S_IRUGO,
+                                S_IFREG | 0444,
                                 debug_info->dir,
                                 &debug_info->panicinfo_blob)) {
                ret = -ENOMEM;