In preparation for separating the rk3568 and rk3566 device trees, move
the base rk3568 dtsi to rk356x dtsi.
This will allow us to strip out the rk3568 specific nodes.
Signed-off-by: Peter Geis <pgwipeout@gmail.com>
Link: https://lore.kernel.org/r/20210710151034.32857-2-pgwipeout@gmail.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>