drm: xlnx: zynqmp_dpsub: Rename zynqmp_dpsub_handle_vblank with DRM prefix

The better convey its purpose, rename the zynqmp_dpsub_handle_vblank()
function that belongs to the DRM layer to
zynqmp_dpsub_drm_handle_vblank().
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

drivers/gpu/drm/xlnx/zynqmp_dp.c

@@ -1581,7 +1581,7 @@ static irqreturn_t zynqmp_dp_irq_handler(int irq, void *data)
 	zynqmp_dp_write(dp, ZYNQMP_DP_INT_STATUS, status);
 
 	if (status & ZYNQMP_DP_INT_VBLANK_START)
-		zynqmp_dpsub_handle_vblank(dp->dpsub);
+		zynqmp_dpsub_drm_handle_vblank(dp->dpsub);
 
 	if (status & ZYNQMP_DP_INT_HPD_EVENT)
 		schedule_delayed_work(&dp->hpd_work, 0);

drivers/gpu/drm/xlnx/zynqmp_kms.c

@@ -339,13 +339,13 @@ static void zynqmp_dpsub_map_crtc_to_plane(struct zynqmp_dpsub *dpsub)
 }
 
 /**
- * zynqmp_dpsub_handle_vblank - Handle the vblank event
+ * zynqmp_dpsub_drm_handle_vblank - Handle the vblank event
  * @dpsub: DisplayPort subsystem
  *
  * This function handles the vblank interrupt, and sends an event to
  * CRTC object. This will be called by the DP vblank interrupt handler.
  */
-void zynqmp_dpsub_handle_vblank(struct zynqmp_dpsub *dpsub)
+void zynqmp_dpsub_drm_handle_vblank(struct zynqmp_dpsub *dpsub)
 {
 	drm_crtc_handle_vblank(&dpsub->drm->crtc);
 }

drivers/gpu/drm/xlnx/zynqmp_kms.h

@@ -38,7 +38,7 @@ struct zynqmp_dpsub_drm {
 	struct drm_encoder encoder;
 };
 
-void zynqmp_dpsub_handle_vblank(struct zynqmp_dpsub *dpsub);
+void zynqmp_dpsub_drm_handle_vblank(struct zynqmp_dpsub *dpsub);
 
 int zynqmp_dpsub_drm_init(struct zynqmp_dpsub *dpsub);
 void zynqmp_dpsub_drm_cleanup(struct zynqmp_dpsub *dpsub);