hw/arm: Re-enable xenpvh machine in qemu-system-arm/aarch64 binaries

While registering the ARM/Aarch64 machine interfaces
in commit 38c5ab4003 ("hw/arm: Filter machine types
for qemu-system-arm/aarch64 binaries"), we missed the
XenPV machine. Correct that.

Reported-by: Edgar E. Iglesias <edgar.iglesias@amd.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Edgar E. Iglesias <edgar.iglesias@amd.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@amd.com>
Message-Id: <20251117091253.56009-1-philmd@linaro.org>

hw/arm/xen-pvh.c

@@ -10,6 +10,7 @@
 #include "hw/boards.h"
 #include "system/system.h"
 #include "hw/xen/xen-pvh-common.h"
+#include "hw/arm/machines-qom.h"
 
 #define TYPE_XEN_ARM  MACHINE_TYPE_NAME("xenpvh")
 
@@ -95,6 +96,7 @@ static const TypeInfo xen_arm_machine_type = {
     .class_init = xen_arm_machine_class_init,
     .instance_size = sizeof(XenPVHMachineState),
     .instance_init = xen_arm_instance_init,
+    .interfaces = arm_aarch64_machine_interfaces,
 };
 
 static void xen_arm_machine_register_types(void)