rockchip: Adjust rk3399 device tree to be closer to linux

This file has changed upstream, with some additions and changes. Move the
U-Boot version towards this.

Some USB changes seem to be incompatible with how the bindings work on
rockchip in U-Boot. Testing is needed to make sure that USB still works
correct, and adjust the code (not device tree) if not.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>