configs: visionfive2: enable CONFIG_CMD_ERASEENV

When moving from vendor U-Boot to the upstream U-Boot it is necessary to
reset the environment.

Provide the 'env erase' sub-command.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
1 file changed