arm64: dts: marvell: Add 7k/8k PHYs in PCIe nodes

Fill-in the missing PCIe phys/phy-names DT properties of Armada 7k/8k
based boards.

The MacchiatoBin is a bit particular as the Armada8k-PCI IP supports
x4 link widths and in this case the PHY for each lane must be
referenced.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>