drm/i915/bmg: Extend DG2 tc check to future

Discrete cards use the Port numbers TC1-4 for the offsets. The regular
flow for type-c subsystem port initialization can be skipped. This check
is present in DG2. Extend this to future discrete products.
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Signed-off-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240430172850.1881525-5-radhakrishna.sripada@intel.com

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

@@ -1894,11 +1894,10 @@ bool intel_phy_is_combo(struct drm_i915_private *dev_priv, enum phy phy)
 bool intel_phy_is_tc(struct drm_i915_private *dev_priv, enum phy phy)
 {
 	/*
-	 * DG2's "TC1", although TC-capable output, doesn't share the same flow
-	 * as other platforms on the display engine side and rather rely on the
-	 * SNPS PHY, that is programmed separately
+	 * Discrete GPU phy's are not attached to FIA's to support TC
+	 * subsystem Legacy or non-legacy, and only support native DP/HDMI
 	 */
-	if (IS_DG2(dev_priv))
+	if (IS_DGFX(dev_priv))
 		return false;
 
 	if (DISPLAY_VER(dev_priv) >= 13)