arm64: dts: allwinner: h5: libretech-all-h3-cc: Mark eMMC HS-DDR 3.3V capable

The Libre Computer ALL-H3-CC H5 is one of the few boards that can have
its eMMC run at HS-DDR speed mode. Mark it as such.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

arch/arm64/boot/dts/allwinner/sun50i-h5-libretech-all-h3-cc.dts

@@ -12,3 +12,7 @@ / {
 	model = "Libre Computer Board ALL-H3-CC H5";
 	compatible = "libretech,all-h3-cc-h5", "allwinner,sun50i-h5";
 };
+
+&mmc2 {
+	mmc-ddr-3_3v;
+};