virtio: move typedef to qemu-common

make it possible to use type without header include,
simplifying header dependencies.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

hw/virtio.h

@@ -69,7 +69,6 @@ static inline target_phys_addr_t vring_align(target_phys_addr_t addr,
 }
 
 typedef struct VirtQueue VirtQueue;
-typedef struct VirtIODevice VirtIODevice;
 
 #define VIRTQUEUE_MAX_SIZE 1024
 

qemu-common.h

@@ -229,6 +229,7 @@ typedef struct I2SCodec I2SCodec;
 typedef struct DeviceState DeviceState;
 typedef struct SSIBus SSIBus;
 typedef struct EventNotifier EventNotifier;
+typedef struct VirtIODevice VirtIODevice;
 
 typedef uint64_t pcibus_t;