drm/radeon: Re-show the cursor after a modeset

Setting a mode seems to clear the cursor registers, so we need to
re-program them to make sure the cursor is visible.

Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/radeon_legacy_crtc.c b/drivers/gpu/drm/radeon/radeon_legacy_crtc.c
index cafb1ccf..678b438 100644
--- a/drivers/gpu/drm/radeon/radeon_legacy_crtc.c
+++ b/drivers/gpu/drm/radeon/radeon_legacy_crtc.c
@@ -1054,6 +1054,7 @@
 			DRM_ERROR("Mode need scaling but only first crtc can do that.\n");
 		}
 	}
+	radeon_cursor_reset(crtc);
 	return 0;
 }