drm/sun4i: support A33 tcon

The A33 has a significantly different pipeline, with components that differ
too.

Make sure we had compatible for them.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c b/drivers/gpu/drm/sun4i/sun4i_drv.c
index 942f62e..c4d03c1 100644
--- a/drivers/gpu/drm/sun4i/sun4i_drv.c
+++ b/drivers/gpu/drm/sun4i/sun4i_drv.c
@@ -199,13 +199,14 @@
 
 static bool sun4i_drv_node_is_frontend(struct device_node *node)
 {
-	return of_device_is_compatible(node,
-				       "allwinner,sun5i-a13-display-frontend");
+	return of_device_is_compatible(node, "allwinner,sun5i-a13-display-frontend") ||
+		of_device_is_compatible(node, "allwinner,sun8i-a33-display-frontend");
 }
 
 static bool sun4i_drv_node_is_tcon(struct device_node *node)
 {
-	return of_device_is_compatible(node, "allwinner,sun5i-a13-tcon");
+	return of_device_is_compatible(node, "allwinner,sun5i-a13-tcon") ||
+		of_device_is_compatible(node, "allwinner,sun8i-a33-tcon");
 }
 
 static int compare_of(struct device *dev, void *data)
@@ -320,6 +321,7 @@
 
 static const struct of_device_id sun4i_drv_of_table[] = {
 	{ .compatible = "allwinner,sun5i-a13-display-engine" },
+	{ .compatible = "allwinner,sun8i-a33-display-engine" },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, sun4i_drv_of_table);