MLBEDSW-10421: Avoid HLC ordering assert by ordered insertion

The HLC op's ifm list is better created by inserting the
ifm's in the correct order; rather than asserting that
the originating order was incorrect.

Signed-off-by: Philip Hall <philip.hall@arm.com>
Change-Id: Idb737bd2418d921e94198a81a53d322365dae7e6