drm/i915/fb: reduce include dependencies

We actually need i915_active_types.h, not i915_active.h.
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NJani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/aed5f1afda4448ec46c7ff1f95291edebf355790.1639142167.git.jani.nikula@intel.com

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

@@ -28,7 +28,7 @@
 #include <linux/kref.h>
 
 #include "gem/i915_gem_object_types.h"
-#include "i915_active.h"
+#include "i915_active_types.h"
 
 struct drm_i915_private;