iommu/omap: Use bus_set_iommu instead of register_iommu

Convert the OMAP IOMMU driver on ARM to use the new
interface for publishing the iommu_ops.

Cc: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

drivers/iommu/omap-iommu.c

@@ -1250,7 +1250,7 @@ static int __init omap_iommu_init(void)
 		return -ENOMEM;
 	iopte_cachep = p;
 
-	register_iommu(&omap_iommu_ops);
+	bus_set_iommu(&platform_bus_type, &omap_iommu_ops);
 
 	return platform_driver_register(&omap_iommu_driver);
 }