Merge patch series "Enable ICSSG Ethernet Driver for AM65x"

Merge patch series "Enable ICSSG Ethernet Driver for AM65x"

MD Danish Anwar <danishanwar@ti.com> says:

The series introduces device tree and config changes and AM65x
to enable ICSSG driver. The series also enables SPL_LOAD_FIT_APPLY_OVERLAY
for AM65x in order to load overlay over spl.

The ICSSG2 node is added in device tree overlay so that it remains in
sync with linux kernel.

This series has been tested on AM65x SR2.0, and the ICSSG interface is
able to ping / dhcp and boot kernel using tftp in uboot.

The users need to set env variables fw_storage_interface, fw_dev_part,
fw_ubi_mtdpart, fw_ubi_volume to indicate which storage medium and
partition they want to use to load firmware files from. By default the env
fw_storage_interface=mmc and fw_dev_part=1:2 but users can modify these
envs as per their requirements.