drm: Pass page flip ioctl flags to driver

This lets drivers see the flags requested by the application

[airlied: fixup for rcar/imx/msm]

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Dave Airlie <airlied@gmail.com>
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index c4b1e63..0c7fec5 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -363,7 +363,8 @@
 	 */
 	int (*page_flip)(struct drm_crtc *crtc,
 			 struct drm_framebuffer *fb,
-			 struct drm_pending_vblank_event *event);
+			 struct drm_pending_vblank_event *event,
+			 uint32_t flags);
 
 	int (*set_property)(struct drm_crtc *crtc,
 			    struct drm_property *property, uint64_t val);