drm/xe/vf: Replay GuC submission state on pause / unpause

drm/xe/vf: Replay GuC submission state on pause / unpause

Fixup GuC submission pause / unpause functions to properly replay any
possible state lost during VF post migration recovery.

v3:
 - Add helpers for revert / replay (Tomasz)
 - Add comment around WQ NOPs (Tomasz)
v7:
 - Only fixup / replay parallel queues once (Testing)
 - Skip unpause step on queues created after resfix done (Testing)

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Tomasz Lis <tomasz.lis@intel.com>
Link: https://lore.kernel.org/r/20251008214532.3442967-27-matthew.brost@intel.com