arm64: dts: renesas: r8a779a0: Remove address- and size-cells from AVB[1-5]

arm64: dts: renesas: r8a779a0: Remove address- and size-cells from AVB[1-5]

When describing the PHYs on the Falcon Ethernet breakout board mdio
nodes will be needed to describe the connections, and each mdio node
will need to contain these two properties instead. This will make the
address-cells and size-cells described in the base SoC include file
redundant and they will produce warnings, remove them.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/20241023154643.4025941-2-niklas.soderlund+renesas@ragnatech.se
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>