BugLink: http://bugs.launchpad.net/bugs/1589704

The erratum fixes the hang of ITS SYNC command by avoiding inter node
io and collections/cpu mapping on thunderx dual-socket platform.

This fix is only applicable for Cavium's ThunderX dual-socket platform.
Reviewed-by: Robert Richter <rrichter@cavium.com>
Signed-off-by: Ganapatrao Kulkarni <gkulkarni@caviumnetworks.com>
Signed-off-by: Robert Richter <rrichter@cavium.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
(back-ported from commit fbf8f40e)
Signed-off-by: dann frazier <dann.frazier@canonical.com>
[ dannf: Adjusted for offset changes; dropped Documentation/ updates for
  file that didn't exist in v4.4 ]
Acked-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>