drm/xe: Split TLB invalidation into submit and wait steps

xe_vm_range_tilemask_tlb_inval() submits TLB invalidation requests to
all GTs in a tile mask and then immediately waits for them to complete
before returning. This is fine for the existing callers, but a
subsequent patch will need to defer the wait in order to overlap TLB
invalidations across multiple VMAs.

Introduce xe_tlb_inval_range_tilemask_submit() and
xe_tlb_inval_batch_wait() in xe_tlb_inval.c as the submit and wait
halves respectively. The batch of fences is carried in the new
xe_tlb_inval_batch structure. Remove xe_vm_range_tilemask_tlb_inval()
and convert all three call sites to the new API.

v3:
- Don't wait on TLB invalidation batches if the corresponding batch
  submit returns an error. (Matt Brost)
- s/_batch/batch/ (Matt Brost)

Assisted-by: GitHub Copilot:claude-sonnet-4.6
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260305093909.43623-4-thomas.hellstrom@linux.intel.com

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