nbd: Clean up use of block_int.h

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

block/nbd.c

@@ -28,6 +28,7 @@
 
 #include "qemu-common.h"
 #include "nbd.h"
+#include "block_int.h"
 #include "module.h"
 #include "qemu_socket.h"
 

nbd.c

@@ -17,6 +17,7 @@
  */
 
 #include "nbd.h"
+#include "block.h"
 
 #include <errno.h>
 #include <string.h>

nbd.h

@@ -23,8 +23,6 @@
 
 #include "qemu-common.h"
 
-#include "block_int.h"
-
 struct nbd_request {
     uint32_t magic;
     uint32_t type;