riscv: sifive: fu540: Enable GEMGXL MGMT driver

Enable the new GEMGXL MGMT driver so that GEM 10/100 Mbps works now.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Tested-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
1 file changed