hw/arm/bcm2836: Use ARM_CPU 'mp-affinity' property

The 'mp-affinity' property is present since commit 15a21fe
("target-arm: Add mp-affinity property for ARM CPU class").
Use it and remove a /* TODO */ comment. Since all ARM CPUs
have this property, use &error_abort, because this call can
not fail.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20231123143813.42632-4-philmd@linaro.org>

hw/arm/bcm2836.c

@@ -127,8 +127,8 @@ static void bcm2836_realize(DeviceState *dev, Error **errp)
         qdev_get_gpio_in_named(DEVICE(&s->control), "gpu-fiq", 0));
 
     for (n = 0; n < BCM283X_NCPUS; n++) {
-        /* TODO: this should be converted to a property of ARM_CPU */
-        s->cpu[n].core.mp_affinity = (bc->clusterid << 8) | n;
+        object_property_set_int(OBJECT(&s->cpu[n].core), "mp-affinity",
+                                (bc->clusterid << 8) | n, &error_abort);
 
         /* set periphbase/CBAR value for CPU-local registers */
         object_property_set_int(OBJECT(&s->cpu[n].core), "reset-cbar",