ARM: dts: sun4i: Sync from Linux v5.18-rc1

Copy the devicetree source for the A10 SoC and all existing boards
verbatim from the Linux v5.18-rc1 tag.

The previous version of this change was only partially applied.

Fixes: 4746694c ("ARM: dts: sun4i: Sync from Linux v5.18-rc1")
Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>