forked from Mirrors/opensbi

The pmp_region_xyz() callbacks are not required in sbi_platform_operations because we will be using OpenSBI domain memory regions to program the PMP CSRs. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>