arm64: defconfig: Enable Renesas R-Car S4-8 Spider Ethernet devices

Enable Renesas "Ethernet Switch", Ethernet SERDES and Marvell 10G PHY
drivers to be used by NFS root on the Renesas Spider board.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20221118120953.1186392-4-yoshihiro.shimoda.uh@renesas.com


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