arm64: dts: rockchip: add reset-names for combphy on rk3568

The reset-names of combphy are missing, add it.

Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
Fixes: fd3ac6e8 ("dt-bindings: phy: rockchip: rk3588 has two reset lines")
Link: https://lore.kernel.org/r/20241122073006.99309-1-amadeus@jmu.edu.cn


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