Add MODULE_DEVICE_TABLE() so ioatdma module is autoloaded

The ioatdma module is missing aliases for the PCI devices it supports, so it is not autoloaded on boot. Add a MODULE_DEVICE_TABLE() to get these aliases.

---
Not sure if not autoloading was intentional or if it's just an oversight, but this patch seems useful to me, so please apply if it makes sense to you.

 drivers/dma/ioat.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

index 2225bb6..a1d8b8d 100644
@@ -60,6 +60,8 @@ static struct pci_device_id ioat_pci_tbl[] = {
 	{ 0, }
 };
 
+MODULE_DEVICE_TABLE(pci, ioat_pci_tbl);
+
 struct ioat_device {
 	struct pci_dev		*pdev;
 	void __iomem		*iobase;

Makes sense. I believe the only hesitation is that it is a bit awkward to remove (ifdown all interfaces, stop all raid456 arrays). However, unless Maciej disagrees I think we should go ahead and autoload it.

Applied for now to the 'fixes' branch of async_tx.git.

Thanks,
Dan