The Soft RoCE (rxe) is located in drivers/inifiniband/sw
and not in drivers/infiniband/hw/.

This patch fixes it.

Fixes: 8700e3e7 ("Soft RoCE driver")
Signed-off-by: NLeon Romanovsky <leon@kernel.org>
Signed-off-by: NDoug Ledford <dledford@redhat.com>