Enable USB host on Armada-8040-DB by adding USB PHY nodes for the
following ports:
  - host 0 and 1 of CPM
  - host 0 of CPS

These PHY are enabled by lanes coming from regulators based on two
I2C expanders.
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>