vfio/pci: Drop debug commentary from x-device-dirty-page-tracking

The intent behind the x-device-dirty-page-tracking option is twofold:

1) development/testing in the presence of VFs with VF dirty page tracking

2) deliberately choosing platform dirty tracker over the VF one.

Item 2) scenario is useful when VF dirty tracker is not as fast as
IOMMU, or there's some limitations around it (e.g. number of them is
limited; aggregated address space under tracking is limited),
efficiency/scalability (e.g. 1 pagetable in IOMMU dirty tracker to scan
vs N VFs) or just troubleshooting. Given item 2 it is not restricted to
debugging, hence drop the debug parenthesis from the option description.

Signed-off-by: Joao Martins <[email protected]>
Reviewed-by: Cédric Le Goater <[email protected]>
Link: https://lore.kernel.org/qemu-devel/[email protected]
[ clg: Fixed subject spelling ]
Signed-off-by: Cédric Le Goater <[email protected]>

Author: jpemartins

hw/vfio/pci.c

@@ -3532,7 +3532,7 @@ static void vfio_pci_dev_class_init(ObjectClass *klass, void *data)
     object_class_property_set_description(klass, /* 9.1 */
                                           "x-device-dirty-page-tracking",
                                           "Disable device dirty page tracking and use "
-                                          "container-based dirty page tracking (DEBUG)");
+                                          "container-based dirty page tracking");
     object_class_property_set_description(klass, /* 9.1 */
                                           "migration-events",
                                           "Emit VFIO migration QAPI event when a VFIO device "