arm64: dts: rockchip: fix node name for hym8563 rtc

Fix the node name for hym8563 in all arm64 rockchip devicetrees.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20221024165549.74574-2-sebastian.reichel@collabora.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>