adlib: fix patching of port I/O addresses

Commit 2b21fb5 (adlib: sort offsets in portio registration, 2013-08-14)
fixed the offsets in adlib_portio_list, but forgot the matching indices
in adlib_realizefn.

Reported at http://virtuallyfun.superglobalmegacorp.com/?p=3616 by
"neozeed".

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
(cherry picked from commit 7f0ba7bb4378f22b017e08947219a352d491bac4)

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>