docs/system: Briefly document collie board

Add skeletal documentation of the collie board.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20200713175746.5936-3-peter.maydell@linaro.org

MAINTAINERS

@@ -847,6 +847,7 @@ L: qemu-arm@nongnu.org
 S: Odd Fixes
 F: hw/arm/collie.c
 F: hw/arm/strongarm*
+F: docs/system/arm/collie.rst
 
 Stellaris
 M: Peter Maydell <peter.maydell@linaro.org>

docs/system/arm/collie.rst

@@ -0,0 +1,16 @@
+Sharp Zaurus SL-5500 (``collie``)
+=================================
+
+This machine is a model of the Sharp Zaurus SL-5500, which was
+a 1990s PDA based on the StrongARM SA1110.
+
+Implemented devices:
+
+ * NOR flash
+ * Interrupt controller
+ * Timer
+ * RTC
+ * GPIO
+ * Peripheral Pin Controller (PPC)
+ * UARTs
+ * Synchronous Serial Ports (SSP)

docs/system/target-arm.rst

@@ -88,6 +88,7 @@ undocumented; you can get a complete list by running
    arm/orangepi
    arm/palm
    arm/xscale
+   arm/collie
    arm/sx1
    arm/stellaris