vfio/pci.h: rename VFIOPCIDevice pdev field to parent_obj

Now that nothing accesses the pdev field directly, rename pdev to
parent_obj as per our current coding guidelines.

Signed-off-by: Mark Cave-Ayland <mark.caveayland@nutanix.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Link: https://lore.kernel.org/qemu-devel/20250715093110.107317-23-mark.caveayland@nutanix.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
3 files changed