ARM: dts: rockchip: Add rv1109 SoC

The Rockchip rv1109 SoC is a dual core version of the rv1126. It is
otherwise identical and shares the same device tree config.

This patch introduces a dtsi file to drop the additional cpu nodes.
Taken from Rockchip BSP kernel.

Signed-off-by: Tim Lunn <tim@feathertop.org>
Link: https://lore.kernel.org/r/20231203124004.2676174-7-tim@feathertop.org


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