arm64: dts: rockchip: Enable HDMI audio on BPI R2 Pro

This enables the i2s0 controller and the hdmi-sound node on
the Bananapi R2 Pro single-board computer.
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Link: https://lore.kernel.org/r/20220606170803.478082-4-linux@fw-web.deSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts

@@ -204,6 +204,10 @@ hdmi_out_con: endpoint {
 	};
 };
 
+&hdmi_sound {
+	status = "okay";
+};
+
 &i2c0 {
 	status = "okay";
 
@@ -444,6 +448,11 @@ &i2c5 {
 	status = "disabled";
 };
 
+&i2s0_8ch {
+	/* hdmi sound */
+	status = "okay";
+};
+
 &mdio1 {
 	rgmii_phy1: ethernet-phy@0 {
 		compatible = "ethernet-phy-ieee802.3-c22";