virtio: rng: re-arrange struct elements for better packing

Re-arrange the elements of the virtrng_info struct to pack it better.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
diff --git a/drivers/char/hw_random/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c
index d8ffebd..a156284 100644
--- a/drivers/char/hw_random/virtio-rng.c
+++ b/drivers/char/hw_random/virtio-rng.c
@@ -30,11 +30,11 @@
 struct virtrng_info {
 	struct hwrng hwrng;
 	struct virtqueue *vq;
-	unsigned int data_avail;
 	struct completion have_data;
-	bool busy;
 	char name[25];
+	unsigned int data_avail;
 	int index;
+	bool busy;
 };
 
 static bool probe_done;