board: ti: j721s2: Add support to detect daughtercards

Add support to detect daughtercards (GESI Ethernet card) in-order
to set the MAC address of the main CPSW2G interface.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
1 file changed