drm/xe: Suballocate BO for page reclaim

drm/xe: Suballocate BO for page reclaim

Page reclamation feature needs the PRL to be suballocated into a
GGTT-mapped BO. On allocation failure, fallback to default tlb
invalidation with full PPC flush.

PRL's BO allocation is managed in separate pool to ensure 4K alignment
for proper GGTT address.

With BO, pass into TLB invalidation backend and modify fence to
accomadate accordingly.

v2:
 - Removed page reclaim related variables from TLB fence. (Matthew B)
 - Allocate PRL bo size to num_entries. (Matthew B)
 - Move PRL bo allocation to tlb_inval run_job. (Matthew B)

v5:
 - Use xe_page_reclaim_list_valid. (Matthew B)

Signed-off-by: Brian Nguyen <brian3.nguyen@intel.com>
Suggested-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20251212213225.3564537-18-brian3.nguyen@intel.com