forked from Mirrors/opensbi

If a hart implements privileged spec v1.12 (or higher) then we can safely assume that menvcfg CSR is present and we don't need MENVCFG as a hart feature. Signed-off-by: Anup Patel <apatel@ventanamicro.com> Reviewed-by: Atish Patra <atishp@rivosinc.com>