drm/i915: Fix PLL state check for gmch platforms

GMCH DPLL state check was mistakenly removed in
commit 87fc875a ("drm/i915/dg2: Skip shared DPLL handling").
Bring it back.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240209183809.16887-2-ville.syrjala@linux.intel.comReviewed-by: Mika Kahola <mika.kahola@intel.com>

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

@@ -5216,9 +5216,11 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 
 	PIPE_CONF_CHECK_BOOL(double_wide);
 
-	if (dev_priv->display.dpll.mgr) {
+	if (dev_priv->display.dpll.mgr)
 		PIPE_CONF_CHECK_P(shared_dpll);
 
+	/* FIXME convert everything over the dpll_mgr */
+	if (dev_priv->display.dpll.mgr || HAS_GMCH(dev_priv)) {
 		PIPE_CONF_CHECK_X(dpll_hw_state.dpll);
 		PIPE_CONF_CHECK_X(dpll_hw_state.dpll_md);
 		PIPE_CONF_CHECK_X(dpll_hw_state.fp0);