drm/xe: set PTE_AE for all platforms supporting it

Atomic access is supported by PVC, and became a common feature for all
platforms starting from Xe2. To enable that XE_VMA_ATOMIC_PTE_BIT needs
to be set, then pte encode will eventually set PTE_AE for devmem.

Signed-off-by: Fei Yang <fei.yang@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://lore.kernel.org/r/20230928044335.1474903-2-fei.yang@intel.com


Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>