vlib: add support for vfio no-iommu mode

Change-Id: Ic83971d8d9d8d0bb90a35932e60761cd728457f3
Signed-off-by: Damjan Marion <damarion@cisco.com>
diff --git a/src/vlib/linux/vfio.h b/src/vlib/linux/vfio.h
index e23cee1..82490d8 100644
--- a/src/vlib/linux/vfio.h
+++ b/src/vlib/linux/vfio.h
@@ -27,6 +27,7 @@
 {
   u32 flags;
 #define LINUX_VFIO_F_HAVE_IOMMU		(1 << 0)
+#define LINUX_VFIO_F_HAVE_NOIOMMU	(1 << 1)
   int container_fd;
 
   /* VFIO */