forked from Mirrors/opensbi

Fix typo in is_region_subset, regB_end should be calculated from regB. Signed-off-by: Nikita Shubin <n.shubin@yadro.com> Reviewed-by: Dong Du <Dd_nirvana@sjtu.edu.cn> Reviewed-by: Xiang W <wxjstz@126.com> Reviewed-by: Anup Patel <anup@brainfault.org>