typedefs: Add BdrvDirtyBitmap

Following patches to refactor and move block dirty bitmap code could use
this.
Signed-off-by: NFam Zheng <famz@redhat.com>
Reviewed-by: NJohn Snow <jsnow@redhat.com>
Message-id: 1457412306-18940-4-git-send-email-famz@redhat.com
Signed-off-by: NMax Reitz <mreitz@redhat.com>

include/block/block.h

@@ -475,7 +475,6 @@ void *qemu_try_blockalign(BlockDriverState *bs, size_t size);
 void *qemu_try_blockalign0(BlockDriverState *bs, size_t size);
 bool bdrv_qiov_is_aligned(BlockDriverState *bs, QEMUIOVector *qiov);
 
-typedef struct BdrvDirtyBitmap BdrvDirtyBitmap;
 BdrvDirtyBitmap *bdrv_create_dirty_bitmap(BlockDriverState *bs,
                                           uint32_t granularity,
                                           const char *name,

include/qemu/typedefs.h

@@ -10,6 +10,7 @@ typedef struct AddressSpace AddressSpace;
 typedef struct AioContext AioContext;
 typedef struct AllwinnerAHCIState AllwinnerAHCIState;
 typedef struct AudioState AudioState;
+typedef struct BdrvDirtyBitmap BdrvDirtyBitmap;
 typedef struct BlockBackend BlockBackend;
 typedef struct BlockBackendRootState BlockBackendRootState;
 typedef struct BlockDriverState BlockDriverState;