drm/i915: Reuse RPLU cdclk fns for MTL+

MTL/LNL use the same cdclk functions as RPLU albeit with different
tables. Having separate tables and not requiring special handling
for the platforms, reuse RPLU cdclk functions.

v2: Update subject and the commit message(Jani)

Cc: Gustavo Sousa <gustavo.sousa@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240228214854.2530205-1-radhakrishna.sripada@intel.com

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

@@ -3559,13 +3559,6 @@ void intel_cdclk_debugfs_register(struct drm_i915_private *i915)
 			    i915, &i915_cdclk_info_fops);
 }
 
-static const struct intel_cdclk_funcs mtl_cdclk_funcs = {
-	.get_cdclk = bxt_get_cdclk,
-	.set_cdclk = bxt_set_cdclk,
-	.modeset_calc_cdclk = bxt_modeset_calc_cdclk,
-	.calc_voltage_level = rplu_calc_voltage_level,
-};
-
 static const struct intel_cdclk_funcs rplu_cdclk_funcs = {
 	.get_cdclk = bxt_get_cdclk,
 	.set_cdclk = bxt_set_cdclk,
@@ -3709,10 +3702,10 @@ static const struct intel_cdclk_funcs i830_cdclk_funcs = {
 void intel_init_cdclk_hooks(struct drm_i915_private *dev_priv)
 {
 	if (DISPLAY_VER(dev_priv) >= 20) {
-		dev_priv->display.funcs.cdclk = &mtl_cdclk_funcs;
+		dev_priv->display.funcs.cdclk = &rplu_cdclk_funcs;
 		dev_priv->display.cdclk.table = lnl_cdclk_table;
 	} else if (DISPLAY_VER(dev_priv) >= 14) {
-		dev_priv->display.funcs.cdclk = &mtl_cdclk_funcs;
+		dev_priv->display.funcs.cdclk = &rplu_cdclk_funcs;
 		dev_priv->display.cdclk.table = mtl_cdclk_table;
 	} else if (IS_DG2(dev_priv)) {
 		dev_priv->display.funcs.cdclk = &tgl_cdclk_funcs;