forked from Mirrors/opensbi

The unsigned length may be 4 bytes or 8 bytes, amoadd.w only applies to 4 bytes hence this patch. Signed-off-by: Xiang W <wxjstz@126.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>
The unsigned length may be 4 bytes or 8 bytes, amoadd.w only applies to 4 bytes hence this patch. Signed-off-by: Xiang W <wxjstz@126.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>