arm64: defconfig: Enable TI_ICSSG_PRUETH

The Programmable Real-time Unit and Industrial Communication Subsystem
Gigabit (PRU_ICSSG) is a low-latency microcontroller subsystem in the TI
K3 SoCs such as AM654x, AM64x. This subsystem is provided for the use
cases like implementation of custom peripheral interfaces, offloading of
tasks from the other processor cores of the SoC, etc.

Currently AM654x-EVM uses ICSSG driver.
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Reviewed-by: Ravi Gunasekaran <r-gunasekaran@ti.com>
Link: https://lore.kernel.org/r/20231128084537.3946895-1-danishanwar@ti.comSigned-off-by: Nishanth Menon <nm@ti.com>

arch/arm64/configs/defconfig

@@ -368,6 +368,7 @@ CONFIG_SNI_NETSEC=y
 CONFIG_STMMAC_ETH=m
 CONFIG_DWMAC_TEGRA=m
 CONFIG_TI_K3_AM65_CPSW_NUSS=y
+CONFIG_TI_ICSSG_PRUETH=m
 CONFIG_QCOM_IPA=m
 CONFIG_MESON_GXL_PHY=m
 CONFIG_AQUANTIA_PHY=y