virtio: Remove duplicate macro definition for max. virtqueues, bump up the max

VIRTIO_PCI_QUEUE_MAX is redefined in hw/virtio.c. Let's just keep it in
hw/virtio.h.

Also, bump up the value of the maximum allowed virtqueues to 64. This is
in preparation to allow multiple ports per virtio-console device.
Signed-off-by: NAmit Shah <amit.shah@redhat.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

hw/virtio.c

@@ -75,8 +75,6 @@ struct VirtQueue
     void (*handle_output)(VirtIODevice *vdev, VirtQueue *vq);
 };
 
-#define VIRTIO_PCI_QUEUE_MAX        16
-
 /* virt queue functions */
 static void virtqueue_init(VirtQueue *vq)
 {

hw/virtio.h

@@ -90,7 +90,7 @@ typedef struct {
     unsigned (*get_features)(void * opaque);
 } VirtIOBindings;
 
-#define VIRTIO_PCI_QUEUE_MAX 16
+#define VIRTIO_PCI_QUEUE_MAX 64
 
 #define VIRTIO_NO_VECTOR 0xffff