For some time we've had a nicely defined macro with the filename for our
firmware image.  However we didn't actually use it in the place we're
supposed to.  This patch fixes it.
Signed-off-by: NNishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: NAlexander Graf <agraf@suse.de>