drm/i915/psr: avoid intel_frontbuffer.h include with declaration

Reduce include dependencies using forward declarations.
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/ee35f2f01f731c21f24a238f2d1690b09ac2da1f.1639142167.git.jani.nikula@intel.com

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

@@ -6,18 +6,19 @@
 #ifndef __INTEL_PSR_H__
 #define __INTEL_PSR_H__
 
-#include "intel_frontbuffer.h"
+#include <linux/types.h>
 
+enum fb_op_origin;
 struct drm_connector;
 struct drm_connector_state;
 struct drm_i915_private;
+struct intel_atomic_state;
+struct intel_crtc;
 struct intel_crtc_state;
 struct intel_dp;
-struct intel_crtc;
-struct intel_atomic_state;
-struct intel_plane_state;
-struct intel_plane;
 struct intel_encoder;
+struct intel_plane;
+struct intel_plane_state;
 
 void intel_psr_init_dpcd(struct intel_dp *intel_dp);
 void intel_psr_pre_plane_update(struct intel_atomic_state *state,