ARM: dts: rockchip: rk3588-rock-5b-u-boot: add USB 2.0 host

Add USB 2.0 host nodes and PHYs.

Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Co-developed-by: William Wu <william.wu@rock-chips.com>
Signed-off-by: William Wu <william.wu@rock-chips.com>
Signed-off-by: Eugen Hristev <eugen.hristev@collabora.com>