arm64: dts: rockchip: Enable HDMI sound on RK3576 EVB1

All RK3576 boards get their HDMI sound from SAI6, which is internally
connected to the HDMI codec. Enable this for Rockchip RK3576 EVB1

Signed-off-by: Alexey Charkov <alchark@gmail.com>
Link: https://patch.msgid.link/20251229-rk3576-sound-v1-6-2f59ef0d19b1@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

Author: alchark

arch/arm64/boot/dts/rockchip/rk3576-evb1-v10.dts

@@ -315,6 +315,10 @@
 	};
 };
 
+&hdmi_sound {
+	status = "okay";
+};
+
 &hdptxphy {
 	status = "okay";
 };
@@ -835,6 +839,10 @@
 	};
 };
 
+&sai6 {
+	status = "okay";
+};
+
 &sdhci {
 	bus-width = <8>;
 	full-pwr-cycle-in-suspend;