board: gateworks: venice: move env location

To allow U-Boot to fit within emmc boot partitions move the env from
just under 16MiB to just under 4MiB as some emmc devices used on venice
boards have 4MiB boot partitions. This still leaves plenty of room for
U-Boot.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
3 files changed