drm/xe: Rename send_tlb_inval_ppgtt to send_tlb_inval_asid_ppgtt

drm/xe: Rename send_tlb_inval_ppgtt to send_tlb_inval_asid_ppgtt

Context-based TLB invalidations have their own set of GuC TLB
invalidation operations. Rename the current PPGTT invalidation function,
which operates on ASIDs, to a more descriptive name that reflects its
purpose.

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Stuart Summers <stuart.summers@intel.com>
Tested-by: Stuart Summers <stuart.summers@intel.com>
Link: https://patch.msgid.link/20260116221731.868657-8-matthew.brost@intel.com