86xx: XPedite5170 board support

Initial support for Extreme Engineering Solutions XPedite5170 -
a MPC8640-based 3U VPX single board computer with a PMC/XMC
site.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
10 files changed