arm64: dts: rockchip: move reset to dedicated eth-phy node on ringneck

arm64: dts: rockchip: move reset to dedicated eth-phy node on ringneck

Using snps,reset-* properties to handle the ethernet-phy resets is
deprecated and instead a real phy node should be used.

Move the Ringneck phy-reset properties to such a node

Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
Tested-by: Quentin Schulz <quentin.schulz@cherry.de>
Link: https://lore.kernel.org/r/20250514150745.2437804-3-heiko@sntech.de
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
[ upstream commit: e463625af7f92c4a9f097f7fb87f6baaad6e762a ]

(cherry picked from commit 76d0d8e00c9ac845ca8d6cbe191cf015ca3a8c16)

Reviewed-by: Sumit Garg <sumit.garg@oss.qualcomm.com>