linux-phytec-fsl

ARM: dts: keystone-k2g: Add Message Manager node

Introduce the message manager node for the A15 queues on which Linux
runs. The Message Manager is primarily used for communication with
Power Management controller on K2G.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>