drm/i915/display: Fix macro HAS_ULTRAJOINER

Currently, Ultrajoiner is supported only on Xe2_HPD.
Update the HAS_ULTRAJOINER macro to reflect the same.

v2: Clarify the commit message to specify platform. (Jani)

Bspec: 69556
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Karthik B S <karthik.b.s@intel.com>
Link: https://lore.kernel.org/r/20250611053039.377695-1-ankit.k.nautiyal@intel.com

Author: aknautiyal

drivers/gpu/drm/i915/display/intel_display_device.h

@@ -192,9 +192,8 @@ struct intel_display_platforms {
 #define HAS_TRANSCODER(__display, trans)	((DISPLAY_RUNTIME_INFO(__display)->cpu_transcoder_mask & \
 						  BIT(trans)) != 0)
 #define HAS_UNCOMPRESSED_JOINER(__display)	(DISPLAY_VER(__display) >= 13)
-#define HAS_ULTRAJOINER(__display)	((DISPLAY_VER(__display) >= 20 || \
-					  ((__display)->platform.dgfx && DISPLAY_VER(__display) == 14)) && \
-					 HAS_DSC(__display))
+#define HAS_ULTRAJOINER(__display)	(((__display)->platform.dgfx && \
+					  DISPLAY_VER(__display) == 14) && HAS_DSC(__display))
 #define HAS_VRR(__display)		(DISPLAY_VER(__display) >= 11)
 #define INTEL_NUM_PIPES(__display)	(hweight8(DISPLAY_RUNTIME_INFO(__display)->pipe_mask))
 #define OVERLAY_NEEDS_PHYSICAL(__display)	(DISPLAY_INFO(__display)->overlay_needs_physical)