xen/blkback: Add module alias for autoloading

Add xen-backend:vbd module alias to the xen-blkback module. This allows automatic loading of the module.

---
 drivers/block/xen-blkback/blkback.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

index 5cf2993..ed62008 100644
@@ -824,3 +824,4 @@ static int __init xen_blkif_init(void)
 module_init(xen_blkif_init);
 
 MODULE_LICENSE("Dual BSD/GPL");
+MODULE_ALIAS("xen-backend:vbd");

1.7.5.4