Post v8.4 bits taken from SysReg_v85_xml-00bet8.
Signed-off-by: NRichard Henderson <richard.henderson@linaro.org>
Message-id: 20181203203839.757-4-richard.henderson@linaro.org
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>