ARM: dts: sun8i: r40: Remove fallback display engine compatible

R40 has pretty unique display pipeline. Because of that, H3 display
engine compatible fallback should be removed.

Fixes: 05a43a262d ("ARM: dts: sun8i: r40: Add HDMI pipeline")

Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

arch/arm/boot/dts/sun8i-r40.dtsi

@@ -102,8 +102,7 @@
 	};
 
 	de: display-engine {
-		compatible = "allwinner,sun8i-r40-display-engine",
-			     "allwinner,sun8i-h3-display-engine";
+		compatible = "allwinner,sun8i-r40-display-engine";
 		allwinner,pipelines = <&mixer0>, <&mixer1>;
 		status = "disabled";
 	};