vfio: Make type1 listener symbols static

They are not used from anywhere but common.c which is where these are
defined so make them static.
Signed-off-by: NAlexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>

hw/vfio/common.c

@@ -475,12 +475,12 @@ static void vfio_listener_region_del(MemoryListener *listener,
     }
 }
 
-const MemoryListener vfio_memory_listener = {
+static const MemoryListener vfio_memory_listener = {
     .region_add = vfio_listener_region_add,
     .region_del = vfio_listener_region_del,
 };
 
-void vfio_listener_release(VFIOContainer *container)
+static void vfio_listener_release(VFIOContainer *container)
 {
     memory_listener_unregister(&container->iommu_data.type1.listener);
 }

include/hw/vfio/vfio-common.h

@@ -131,7 +131,6 @@ void vfio_region_write(void *opaque, hwaddr addr,
                            uint64_t data, unsigned size);
 uint64_t vfio_region_read(void *opaque,
                           hwaddr addr, unsigned size);
-void vfio_listener_release(VFIOContainer *container);
 int vfio_mmap_region(Object *vdev, VFIORegion *region,
                      MemoryRegion *mem, MemoryRegion *submem,
                      void **map, size_t size, off_t offset,
@@ -143,7 +142,6 @@ int vfio_get_device(VFIOGroup *group, const char *name,
                     VFIODevice *vbasedev);
 
 extern const MemoryRegionOps vfio_region_ops;
-extern const MemoryListener vfio_memory_listener;
 extern QLIST_HEAD(vfio_group_head, VFIOGroup) vfio_group_list;
 extern QLIST_HEAD(vfio_as_head, VFIOAddressSpace) vfio_address_spaces;