drm/xe/vf: Ensure media GT VF recovery runs after primary GT on PTL

drm/xe/vf: Ensure media GT VF recovery runs after primary GT on PTL

It is possible that the media GT's VF post-migration recovery work item
gets scheduled before the primary GT's work item. Since the media GT
depends on the primary GT's work item to complete CCS restore, if the
media GT's work item is scheduled first, detect this condition and
re-queue the media GT's work item for a later time.

v5:
 - Adjust debug message (Tomasz)

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Tomasz Lis <tomasz.lis@intel.com>
Link: https://lore.kernel.org/r/20251008214532.3442967-33-matthew.brost@intel.com