drm: renesas: shmobile: Move shmob_drm_crtc_finish_page_flip()

Move the shmob_drm_crtc_finish_page_flip() function up, to avoid having
to move it during the modification in the next change.
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/4c87bb31403d142f8f146176cb859a10a28a3601.1694767209.git.geert+renesas@glider.be

drivers/gpu/drm/renesas/shmobile/shmob_drm_crtc.c

@@ -35,6 +35,26 @@
  * TODO: panel support
  */
 
+/* -----------------------------------------------------------------------------
+ * Page Flip
+ */
+
+void shmob_drm_crtc_finish_page_flip(struct shmob_drm_crtc *scrtc)
+{
+	struct drm_pending_vblank_event *event;
+	struct drm_device *dev = scrtc->base.dev;
+	unsigned long flags;
+
+	spin_lock_irqsave(&dev->event_lock, flags);
+	event = scrtc->event;
+	scrtc->event = NULL;
+	if (event) {
+		drm_crtc_send_vblank_event(&scrtc->base, event);
+		drm_crtc_vblank_put(&scrtc->base);
+	}
+	spin_unlock_irqrestore(&dev->event_lock, flags);
+}
+
 /* -----------------------------------------------------------------------------
  * CRTC
  */
@@ -364,22 +384,6 @@ static const struct drm_crtc_helper_funcs crtc_helper_funcs = {
 	.mode_set_base = shmob_drm_crtc_mode_set_base,
 };
 
-void shmob_drm_crtc_finish_page_flip(struct shmob_drm_crtc *scrtc)
-{
-	struct drm_pending_vblank_event *event;
-	struct drm_device *dev = scrtc->base.dev;
-	unsigned long flags;
-
-	spin_lock_irqsave(&dev->event_lock, flags);
-	event = scrtc->event;
-	scrtc->event = NULL;
-	if (event) {
-		drm_crtc_send_vblank_event(&scrtc->base, event);
-		drm_crtc_vblank_put(&scrtc->base);
-	}
-	spin_unlock_irqrestore(&dev->event_lock, flags);
-}
-
 static int shmob_drm_crtc_page_flip(struct drm_crtc *crtc,
 				    struct drm_framebuffer *fb,
 				    struct drm_pending_vblank_event *event,