arm64: dts: allwinner: sun50i: Add Crypto Engine node on A64

The Crypto Engine is a hardware cryptographic accelerator that supports
many algorithms.
It could be found on most Allwinner SoCs.

This patch enables the Crypto Engine on the Allwinner A64 SoC Device-tree.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>