drm/xe/ptl: Enable PTL display

At this point we should have enough support landed to turn on and start
basic testing of display functionality.

Signed-off-by: Haridhar Kalvala <haridhar.kalvala@intel.com>
Signed-off-by: Clint Taylor <Clinton.A.Taylor@intel.com>
Acked-by: Jani Saarinen <jani.saarinen@intel.com>
Tested-by: Jani <Saarinen&lt;jani.saarinen@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241028193015.3241858-10-clinton.a.taylor@intel.com