ARM: dts: sun8i: R40/T3: Sync from Linux v5.18-rc1

Copy the devicetree for the R40/T3 SoC verbatim from the Linux v5.18-rc1
tag. None of the existing boards had any devicetree updates.

This commit adds the following new board devicetrees:
 - sun8i-r40-oka40i-c.dts
 - sun8i-t3-cqa3t-bv3.dts

Signed-off-by: Samuel Holland <samuel@sholland.org>