riscv: dts: renesas: rzfive-smarc-som: Drop PHY interrupt support for ETH{0,1}

IRQC support for RZ/Five is still missing so drop the interrupts and
interrupt-parent properties from the PHY nodes of ETH{0,1}.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230102222708.274369-1-prabhakar.mahadev-lad.rj@bp.renesas.com


Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>