arm64: defconfig: Enable RZ/G3S (R9A08G045) SoC

Enable the config flag for the Renesas RZ/G3S (R9A08G045) SoC.
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230929053915.1530607-29-claudiu.beznea@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm64/configs/defconfig

@@ -1335,6 +1335,7 @@ CONFIG_ARCH_R8A774B1=y
 CONFIG_ARCH_R9A07G043=y
 CONFIG_ARCH_R9A07G044=y
 CONFIG_ARCH_R9A07G054=y
+CONFIG_ARCH_R9A08G045=y
 CONFIG_ARCH_R9A09G011=y
 CONFIG_ROCKCHIP_IODOMAIN=y
 CONFIG_ROCKCHIP_PM_DOMAINS=y