drm/i915/opregion: make struct intel_opregion opaque

With the recent cleanups, only intel_opregion.c needs to know the
definition of struct intel_opregion. Allocate it dynamically and make it
opaque.

Cc: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Reviewed-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/3b68d7ff4b2930eaf15d9657618a738b9065f64b.1704992868.git.jani.nikula@intel.com

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

@@ -49,6 +49,7 @@ struct intel_fbdev;
 struct intel_fdi_funcs;
 struct intel_hotplug_funcs;
 struct intel_initial_plane_config;
+struct intel_opregion;
 struct intel_overlay;
 
 /* Amount of SAGV/QGV points, BSpec precisely defines this */
@@ -526,7 +527,7 @@ struct intel_display {
 	struct intel_fbc *fbc[I915_MAX_FBCS];
 	struct intel_frontbuffer_tracking fb_tracking;
 	struct intel_hotplug hotplug;
-	struct intel_opregion opregion;
+	struct intel_opregion *opregion;
 	struct intel_overlay *overlay;
 	struct intel_display_params params;
 	struct intel_vbt_data vbt;

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

@@ -25,38 +25,13 @@
 #ifndef _INTEL_OPREGION_H_
 #define _INTEL_OPREGION_H_
 
-#include <linux/workqueue.h>
 #include <linux/pci.h>
+#include <linux/types.h>
 
 struct drm_i915_private;
 struct intel_connector;
 struct intel_encoder;
 
-struct opregion_header;
-struct opregion_acpi;
-struct opregion_swsci;
-struct opregion_asle;
-struct opregion_asle_ext;
-
-struct intel_opregion {
-	struct opregion_header *header;
-	struct opregion_acpi *acpi;
-	struct opregion_swsci *swsci;
-	u32 swsci_gbda_sub_functions;
-	u32 swsci_sbcb_sub_functions;
-	struct opregion_asle *asle;
-	struct opregion_asle_ext *asle_ext;
-	void *rvda;
-	void *vbt_firmware;
-	const void *vbt;
-	u32 vbt_size;
-	u32 *lid_state;
-	struct work_struct asle_work;
-	struct notifier_block acpi_notifier;
-};
-
-#define OPREGION_SIZE            (8 * 1024)
-
 #ifdef CONFIG_ACPI
 
 int intel_opregion_setup(struct drm_i915_private *dev_priv);