forked from Mirrors/opensbi

Because the CSR names in the spec are mseccfg and mseccfgh. Remove CSR_MSECCFG_LOWER and CSR_MSECCFG_UPPER and directly define CSR_MSECCFG and CSR_MSECCFGH. Signed-off-by: Xiang W <wxjstz@126.com> Reviewed-by: Anup Patel <anup@brainfault.org>