forked from Mirrors/opensbi

As more drivers adding memregions into root domain, the current static limit of ROOT_REGION_MAX is not sufficient. Increase the limit to accomodate more memregions. Signed-off-by: Rahul Pathak <rpathak@ventanamicro.com> Signed-off-by: Anup Patel <apatel@ventanamicro.com>