arm64: dts: marvell: add comphy nodes on cp110 master and slave

This patch describes the comphy available in the cp110 master and slave.
This comphy provides serdes lanes used by various controllers such as
the network one.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>