drm/i915/display: move hti under display sub-struct

Move display hti/hdport related members under drm_i915_private display
sub-struct.

Prefer adding anonymous sub-structs even for single members that aren't
our own structs.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221109144209.3624739-2-jani.nikula@intel.com

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

@@ -370,6 +370,16 @@ struct intel_display {
 		struct mutex comp_mutex;
 	} hdcp;
 
+	struct {
+		/*
+		 * HTI (aka HDPORT) state read during initial hw readout. Most
+		 * platforms don't have HTI, so this will just stay 0. Those
+		 * that do will use this later to figure out which PLLs and PHYs
+		 * are unavailable for driver usage.
+		 */
+		u32 state;
+	} hti;
+
 	struct {
 		struct i915_power_domains domains;
 

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

@@ -16,23 +16,23 @@ void intel_hti_init(struct drm_i915_private *i915)
 	 * any display resources before we create our display outputs.
 	 */
 	if (INTEL_INFO(i915)->display.has_hti)
-		i915->hti_state = intel_de_read(i915, HDPORT_STATE);
+		i915->display.hti.state = intel_de_read(i915, HDPORT_STATE);
 }
 
 bool intel_hti_uses_phy(struct drm_i915_private *i915, enum phy phy)
 {
-	return i915->hti_state & HDPORT_ENABLED &&
-		i915->hti_state & HDPORT_DDI_USED(phy);
+	return i915->display.hti.state & HDPORT_ENABLED &&
+		i915->display.hti.state & HDPORT_DDI_USED(phy);
 }
 
 u32 intel_hti_dpll_mask(struct drm_i915_private *i915)
 {
-	if (!(i915->hti_state & HDPORT_ENABLED))
+	if (!(i915->display.hti.state & HDPORT_ENABLED))
 		return 0;
 
 	/*
 	 * Note: This is subtle. The values must coincide with what's defined
 	 * for the platform.
 	 */
-	return REG_FIELD_GET(HDPORT_DPLL_USED_MASK, i915->hti_state);
+	return REG_FIELD_GET(HDPORT_DPLL_USED_MASK, i915->display.hti.state);
 }

drivers/gpu/drm/i915/i915_drv.h

@@ -300,14 +300,6 @@ struct drm_i915_private {
 
 	struct intel_l3_parity l3_parity;
 
-	/*
-	 * HTI (aka HDPORT) state read during initial hw readout.  Most
-	 * platforms don't have HTI, so this will just stay 0.  Those that do
-	 * will use this later to figure out which PLLs and PHYs are unavailable
-	 * for driver usage.
-	 */
-	u32 hti_state;
-
 	/*
 	 * edram size in MB.
 	 * Cannot be determined by PCIID. You must always read a register.