arm64: dts: ti: k3-j784s4-evm: Enable Main CPSW2G node and add aliases for it

Enable MAIN CPSW2G and add alias for it to enable Linux to fetch
MAC Address for the port directly from U-Boot.

Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com>
Signed-off-by: Chintan Vankar <c-vankar@ti.com>
Link: https://lore.kernel.org/r/20240502091002.3659435-4-c-vankar@ti.com


Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>