memory: Add MemoryListener to typedefs.h

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>

include/exec/memory.h

@@ -163,8 +163,6 @@ struct MemoryRegion {
     NotifierList iommu_notify;
 };
 
-typedef struct MemoryListener MemoryListener;
-
 /**
  * MemoryListener: callbacks structure for updates to the physical memory map
  *

include/qemu/typedefs.h

@@ -26,6 +26,7 @@ typedef struct BusClass BusClass;
 typedef struct AddressSpace AddressSpace;
 typedef struct MemoryRegion MemoryRegion;
 typedef struct MemoryRegionSection MemoryRegionSection;
+typedef struct MemoryListener MemoryListener;
 
 typedef struct MemoryMappingList MemoryMappingList;