drm/i915/panel: move intel_panel_use_ssc() out of headers

There's no performance reason to have it as static inline; move it out
of intel_display_types.h to reduce clutter and dependency on i915_drv.h.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/6f2c05005e4fa43a5572b02b3f41363725ffdb4f.1629281426.git.jani.nikula@intel.com

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

@@ -92,6 +92,7 @@
 #include "intel_hdcp.h"
 #include "intel_hotplug.h"
 #include "intel_overlay.h"
+#include "intel_panel.h"
 #include "intel_pipe_crc.h"
 #include "intel_pm.h"
 #include "intel_pps.h"

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

@@ -2035,14 +2035,6 @@ to_intel_frontbuffer(struct drm_framebuffer *fb)
 	return fb ? to_intel_framebuffer(fb)->frontbuffer : NULL;
 }
 
-static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
-{
-	if (dev_priv->params.panel_use_ssc >= 0)
-		return dev_priv->params.panel_use_ssc != 0;
-	return dev_priv->vbt.lvds_use_ssc
-		&& !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
-}
-
 static inline u32 i9xx_dpll_compute_fp(struct dpll *dpll)
 {
 	return dpll->n << 16 | dpll->m1 << 8 | dpll->m2;

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

@@ -41,6 +41,14 @@
 #include "intel_dsi_dcs_backlight.h"
 #include "intel_panel.h"
 
+bool intel_panel_use_ssc(struct drm_i915_private *i915)
+{
+	if (i915->params.panel_use_ssc >= 0)
+		return i915->params.panel_use_ssc != 0;
+	return i915->vbt.lvds_use_ssc
+		&& !(i915->quirks & QUIRK_LVDS_SSC_DISABLE);
+}
+
 void
 intel_fixed_panel_mode(const struct drm_display_mode *fixed_mode,
 		       struct drm_display_mode *adjusted_mode)

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

@@ -25,6 +25,7 @@ int intel_panel_init(struct intel_panel *panel,
 void intel_panel_fini(struct intel_panel *panel);
 enum drm_connector_status
 intel_panel_detect(struct drm_connector *connector, bool force);
+bool intel_panel_use_ssc(struct drm_i915_private *i915);
 void intel_fixed_panel_mode(const struct drm_display_mode *fixed_mode,
 			    struct drm_display_mode *adjusted_mode);
 int intel_pch_panel_fitting(struct intel_crtc_state *crtc_state,