Implement the SECMPCINTSTATUS register. This is the only register
in the security controller that deals with Memory Protection
Controllers, and it simply provides a read-only view of the
interrupt lines from the various MPCs in the system.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 20180620132032.28865-6-peter.maydell@linaro.org