sunxi: dts: H616: Drop reserved-memory node

sunxi: dts: H616: Drop reserved-memory node

Trusted Firmware now adds the /reserved-memory subnode to the DT at
runtime[1], putting in the right values.

Drop our hard-coded version, as this might clash with the actual values
(which have also changed), and rely on TF-A to add the node.

[1] https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/7770

Signed-off-by: Andre Przywara <[email protected]>
Reviewed-by: Samuel Holland <[email protected]>
Reviewed-by: Jagan Teki <[email protected]>