ARM: mvebu: add missing of_node_put() to fix reference leak

Add of_node_put to properly decrement the refcount when we are
done using a given node.

Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Reviewed-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Conflicts:
	arch/arm/mach-mvebu/armada-370-xp.c
	arch/arm/mach-mvebu/platsmp.c

diff --cc arch/arm/mach-mvebu/coherency.c
Simple merge

diff --cc arch/arm/mach-mvebu/pmsu.c
Simple merge

diff --cc arch/arm/mach-mvebu/system-controller.c
Simple merge