drm/i915: Pass intel_display to intel_scanout_needs_vtd_wa()

drm/i915: Pass intel_display to intel_scanout_needs_vtd_wa()

Now that intel_scanout_needs_vtd_wa() is no longer used from
the gem code we can convert it to take struct intel_display.
which will help with converting the low level plane code over
as well.

Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250206185533.32306-2-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>