switch simple generic_file_aio_read() users to ->read_iter()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index 4f34dba..ab72152 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1582,9 +1582,9 @@
 
 const struct file_operations ubifs_file_operations = {
 	.llseek         = generic_file_llseek,
-	.read           = do_sync_read,
+	.read           = new_sync_read,
 	.write          = do_sync_write,
-	.aio_read       = generic_file_aio_read,
+	.read_iter      = generic_file_read_iter,
 	.aio_write      = ubifs_aio_write,
 	.mmap           = ubifs_file_mmap,
 	.fsync          = ubifs_fsync,