arm64: dts: rockchip: add Quartz64-A usb2 support

Add the nodes and regulators to enable usb2 support on the Quartz64
Model A.

Signed-off-by: Peter Geis <pgwipeout@gmail.com>
Tested-by: Michael Riesch <michael.riesch@wolfvision.net>
Link: https://lore.kernel.org/r/20211215210252.120923-9-pgwipeout@gmail.com


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