drm/i915/scaler: Nuke redundant code

The tgl+ and mtl+ numbers in skl_scaler_max_dst_size() are
identical. Combine them to a single piece of code.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241219130827.22830-6-ville.syrjala@linux.intel.com


Reviewed-by: Luca Coelho <luciano.coelho@intel.com>