drm/i915: Hook in display GTT faults for ILK/SNB

Hook up display GTT fault interrupts for ILK/SNB.

Bspec: 8559
Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250217070047.953-6-ville.syrjala@linux.intel.com