qdev-core: remove DeviceListener from typedefs.h

It is needed in very few places, which already depend on other parts of
qdev-core.h files.  The benefit of having it in typedefs.h is small.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

include/hw/qdev-core.h

@@ -294,6 +294,7 @@ struct DeviceState {
     MemReentrancyGuard mem_reentrancy_guard;
 };
 
+typedef struct DeviceListener DeviceListener;
 struct DeviceListener {
     void (*realize)(DeviceListener *listener, DeviceState *dev);
     void (*unrealize)(DeviceListener *listener, DeviceState *dev);

include/qemu/typedefs.h

@@ -47,7 +47,6 @@ typedef struct CpuInfoFast CpuInfoFast;
 typedef struct CPUJumpCache CPUJumpCache;
 typedef struct CPUState CPUState;
 typedef struct CPUTLBEntryFull CPUTLBEntryFull;
-typedef struct DeviceListener DeviceListener;
 typedef struct DeviceState DeviceState;
 typedef struct DirtyBitmapSnapshot DirtyBitmapSnapshot;
 typedef struct DisplayChangeListener DisplayChangeListener;