drm/i915: make intel_frontbuffer.h self-contained

This will be helpful in the follow-up work. No functional changes.
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/9a19d43987006e4249b335f3d843da43c998376c.1554461791.git.jani.nikula@intel.com

drivers/gpu/drm/i915/Makefile.header-test

@@ -10,6 +10,7 @@ header_test := \
 	i915_timeline_types.h \
 	intel_context_types.h \
 	intel_engine_types.h \
+	intel_frontbuffer.h \
 	intel_workarounds_types.h
 
 quiet_cmd_header_test = HDRTEST $@

drivers/gpu/drm/i915/i915_drv.h

@@ -66,13 +66,14 @@
 #include "intel_device_info.h"
 #include "intel_display.h"
 #include "intel_dpll_mgr.h"
+#include "intel_frontbuffer.h"
 #include "intel_lrc.h"
 #include "intel_opregion.h"
 #include "intel_ringbuffer.h"
+#include "intel_uc.h"
 #include "intel_uncore.h"
 #include "intel_wopcm.h"
 #include "intel_workarounds.h"
-#include "intel_uc.h"
 
 #include "i915_gem.h"
 #include "i915_gem_context.h"
@@ -375,14 +376,6 @@ enum i915_cache_level {
 
 #define I915_COLOR_UNEVICTABLE (-1) /* a non-vma sharing the address space */
 
-enum fb_op_origin {
-	ORIGIN_GTT,
-	ORIGIN_CPU,
-	ORIGIN_CS,
-	ORIGIN_FLIP,
-	ORIGIN_DIRTYFB,
-};
-
 struct intel_fbc {
 	/* This is always the inner lock when overlapping with struct_mutex and
 	 * it's the outer lock when overlapping with stolen_lock. */

drivers/gpu/drm/i915/intel_frontbuffer.h

@@ -24,9 +24,19 @@
 #ifndef __INTEL_FRONTBUFFER_H__
 #define __INTEL_FRONTBUFFER_H__
 
+#include "i915_gem_object.h"
+
 struct drm_i915_private;
 struct drm_i915_gem_object;
 
+enum fb_op_origin {
+	ORIGIN_GTT,
+	ORIGIN_CPU,
+	ORIGIN_CS,
+	ORIGIN_FLIP,
+	ORIGIN_DIRTYFB,
+};
+
 void intel_frontbuffer_flip_prepare(struct drm_i915_private *dev_priv,
 				    unsigned frontbuffer_bits);
 void intel_frontbuffer_flip_complete(struct drm_i915_private *dev_priv,