drm/radeon: remove (pre|post)_page_flip callbacks

They are doing the same on all generations anyway.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 8d99d5e..beccc4a 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -342,7 +342,7 @@
 
 	drm_vblank_put(rdev->ddev, radeon_crtc->crtc_id);
 	radeon_fence_unref(&work->fence);
-	radeon_post_page_flip(work->rdev, work->crtc_id);
+	radeon_irq_kms_pflip_irq_get(rdev, work->crtc_id);
 	schedule_work(&work->work);
 }
 
@@ -471,7 +471,7 @@
 	}
 
 	/* set the proper interrupt */
-	radeon_pre_page_flip(rdev, radeon_crtc->crtc_id);
+	radeon_irq_kms_pflip_irq_get(rdev, radeon_crtc->crtc_id);
 
 	return 0;