virtio: fix section mismatch warnings

Fix fixes the following warnings by renaming the driver structures to be
suffixed with _driver.

WARNING: drivers/virtio/virtio_balloon.o(.data+0x88): Section mismatch in reference from the variable virtio_balloon to the function .devexit.text:virtballoon_remove()

WARNING: drivers/char/hw_random/virtio-rng.o(.data+0x88): Section mismatch in reference from the variable virtio_rng to the function .devexit.text:virtrng_remove()

Signed-off-by: Jeff Mahoney <[e-mail]>
Acked-by: Rusty Russell <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/char/hw_random/virtio-rng.c

···
 	{ 0 },
 };
 
-static struct virtio_driver virtio_rng = {
+static struct virtio_driver virtio_rng_driver = {
 	.driver.name =	KBUILD_MODNAME,
 	.driver.owner =	THIS_MODULE,
 	.id_table =	id_table,
···
 
 static int __init init(void)
 {
-	return register_virtio_driver(&virtio_rng);
+	return register_virtio_driver(&virtio_rng_driver);
 }
 
 static void __exit fini(void)
 {
-	unregister_virtio_driver(&virtio_rng);
+	unregister_virtio_driver(&virtio_rng_driver);
 }
 module_init(init);
 module_exit(fini);

drivers/virtio/virtio_balloon.c

···
 
 static unsigned int features[] = { VIRTIO_BALLOON_F_MUST_TELL_HOST };
 
-static struct virtio_driver virtio_balloon = {
+static struct virtio_driver virtio_balloon_driver = {
 	.feature_table = features,
 	.feature_table_size = ARRAY_SIZE(features),
 	.driver.name =	KBUILD_MODNAME,
···
 
 static int __init init(void)
 {
-	return register_virtio_driver(&virtio_balloon);
+	return register_virtio_driver(&virtio_balloon_driver);
 }
 
 static void __exit fini(void)
 {
-	unregister_virtio_driver(&virtio_balloon);
+	unregister_virtio_driver(&virtio_balloon_driver);
 }
 module_init(init);
 module_exit(fini);