drm/i915/cdclk: move struct intel_cdclk_funcs to intel_cdclk.c

The funcs struct can be opaque, make it internal to intel_cdclk.c.
Suggested-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211213114106.296017-2-jani.nikula@intel.com

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

@@ -63,6 +63,17 @@
  * dividers can be programmed correctly.
  */
 
+struct intel_cdclk_funcs {
+	void (*get_cdclk)(struct drm_i915_private *i915,
+			  struct intel_cdclk_config *cdclk_config);
+	void (*set_cdclk)(struct drm_i915_private *i915,
+			  const struct intel_cdclk_config *cdclk_config,
+			  enum pipe pipe);
+	int (*bw_calc_min_cdclk)(struct intel_atomic_state *state);
+	int (*modeset_calc_cdclk)(struct intel_cdclk_state *state);
+	u8 (*calc_voltage_level)(int cdclk);
+};
+
 void intel_cdclk_get_cdclk(struct drm_i915_private *dev_priv,
 			   struct intel_cdclk_config *cdclk_config)
 {

drivers/gpu/drm/i915/i915_drv.h

@@ -293,6 +293,7 @@ struct intel_connector;
 struct intel_encoder;
 struct intel_atomic_state;
 struct intel_cdclk_config;
+struct intel_cdclk_funcs;
 struct intel_cdclk_state;
 struct intel_cdclk_vals;
 struct intel_initial_plane_config;
@@ -341,17 +342,6 @@ struct intel_color_funcs {
 	void (*read_luts)(struct intel_crtc_state *crtc_state);
 };
 
-struct intel_cdclk_funcs {
-	void (*get_cdclk)(struct drm_i915_private *dev_priv,
-			  struct intel_cdclk_config *cdclk_config);
-	void (*set_cdclk)(struct drm_i915_private *dev_priv,
-			  const struct intel_cdclk_config *cdclk_config,
-			  enum pipe pipe);
-	int (*bw_calc_min_cdclk)(struct intel_atomic_state *state);
-	int (*modeset_calc_cdclk)(struct intel_cdclk_state *state);
-	u8 (*calc_voltage_level)(int cdclk);
-};
-
 struct intel_hotplug_funcs {
 	void (*hpd_irq_setup)(struct drm_i915_private *dev_priv);
 };