drm/i915/dp_mst: Account with the DSC DPT bpp limit on MTL

The DPT/DSC bpp limit should be accounted for on MTL platforms as well,
do so.

Bspec: 49259
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240416221010.376865-6-imre.deak@intel.com

drivers/gpu/drm/i915/display/intel_dp_mst.c

@@ -56,7 +56,7 @@ static int intel_dp_mst_check_constraints(struct drm_i915_private *i915, int bpp
 					  struct intel_crtc_state *crtc_state,
 					  bool dsc)
 {
-	if (intel_dp_is_uhbr(crtc_state) && DISPLAY_VER(i915) < 14 && dsc) {
+	if (intel_dp_is_uhbr(crtc_state) && DISPLAY_VER(i915) < 20 && dsc) {
 		int output_bpp = bpp;
 		int symbol_clock = intel_dp_link_symbol_clock(crtc_state->port_clock);
 		/*