Description of problem:
Google contributed some patches that are doing the following:
* Updating virtio-lib to the recent changes in Linux
* Updating the usage of virtio-lib in existing drivers
* Enable published indices in virtio-scsi
* Clean-ups and cosmetics in virt queue usages.
* Some changes in debug level for high debug level printouts
* Some other minor changes that might effect the drivers as a result of changes around virtio-lib usage.
Those patches should be tested as any other code change that we introduce into the driver.
Version-Release number of selected component (if applicable):
Steps to Reproduce: