ARM: mvebu: enable the coherency fabric on Armada 375

This commit adds the necessary Device Tree information to enable the
coherency fabric on Armada 375.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1397483228-25625-10-git-send-email-thomas.petazzoni@free-electrons.com


Signed-off-by: Jason Cooper <jason@lakedaemon.net>