switch sysfs_chmod_file() to umode_t

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index d4e6080..120c3ad 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -618,7 +618,7 @@
  *
  */
 int sysfs_chmod_file(struct kobject *kobj, const struct attribute *attr,
-		     mode_t mode)
+		     umode_t mode)
 {
 	struct sysfs_dirent *sd;
 	struct iattr newattrs;