sigh, simply forgot to include the endian header

so the ppc64 bridge was broken

Change-Id: Ib60274ed25531f500bcd97f5ea9b04091ce01825
(cherry picked from commit 7da6716e98f22d6cb968c3218b5f4936f868a977)
Reviewed-on: https://gerrit.libreoffice.org/11188
Reviewed-by: David Tardon <dtardon@redhat.com>
Tested-by: David Tardon <dtardon@redhat.com>