drm/i915: Introduce struct intel_fb_pin_params

drm/i915: Introduce struct intel_fb_pin_params

We need to pass a lot of information between the display driver
and the core driver to get framebuffers mapped into GGTT/DPT
correctly. Rather than passing around a swarm of integers and
boolean as function arguments, let's collect it all into a
structure (struct intel_fb_pin_params).

Start by moving the gtt view, alignment, phys_alignment,
and vtd_guard there. Going forward additional things need
to added as well (mainly various boolean flags).

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20260416174448.28264-3-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>