arm64: dts: rockchip: Add PCIe 2 nodes to quartz64-b

This adds the regulator node to the quartz64-b device tree,
and enables the PCIe 2 controller and combphy for it.

Signed-off-by: Nicolas Frattaroli <frattaroli.nicolas@gmail.com>
Link: https://lore.kernel.org/r/20220718033145.792657-1-frattaroli.nicolas@gmail.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>