ARM: dts: rockchip: add vpu and vdec node for RK322x

The VPU and the VDEC IP block of RK322x are the same as RK3399 has and
the drivers can be used as-is.

Add the respective nodes to the device tree.

Signed-off-by: Alex Bee <knaerzche@gmail.com>
Link: https://lore.kernel.org/r/20210527154455.358869-13-knaerzche@gmail.com


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