hw/acpi: Make storage of node id uint32_t to reduce fragility

>From review of generic port introduction.

The value is handled as a uint32_t so store it in that type.
The value cannot in reality exceed MAX_NODES which is currently
128 but if the types are matched there is no need to rely on that
restriction.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20240916174237.1843213-1-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
diff --git a/hw/acpi/pci.c b/hw/acpi/pci.c
index d7a0e91..a4835ce 100644
--- a/hw/acpi/pci.c
+++ b/hw/acpi/pci.c
@@ -72,7 +72,7 @@
 
     /* public */
     char *pci_dev;
-    uint16_t node;
+    uint32_t node;
 } AcpiGenericInitiator;
 
 typedef struct AcpiGenericInitiatorClass {