hw/misc/iotkit-sysinfo: Implement IoTKit system information block

Implement the IoTKit system control element's system information
block; this is just a pair of read-only version/config registers,
plus the usual PID/CID ID registers.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180820141116.9118-10-peter.maydell@linaro.org
diff --git a/MAINTAINERS b/MAINTAINERS
index c0c3012..17345de 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -541,6 +541,8 @@
 F: include/hw/arm/iotkit.h
 F: hw/misc/iotkit-sysctl.c
 F: include/hw/misc/iotkit-sysctl.h
+F: hw/misc/iotkit-sysinfo.c
+F: include/hw/misc/iotkit-sysinfo.h
 
 Musicpal
 M: Jan Kiszka <jan.kiszka@web.de>