drm/xe/display: Add support for AuxCCS

drm/xe/display: Add support for AuxCCS

Add support for mapping the auxiliary CCS buffer into the DPT page tables.

This will allow for better power efficiency by enabling the render
compression frame buffer modifiers such as
I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS in a following patch.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Cc: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Cc: Michael J. Ruhl <michael.j.ruhl@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patch.msgid.link/20260324084018.20353-12-tvrtko.ursulin@igalia.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>