sunxi: dts: sync Allwinner V3s-related DTs from Linux 5.10-rc1

This commit imports device tree files that are related to Allwinner V3
series from Linux commit 3650b228f83a ("Linux 5.10-rc1").

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>