arm64: dts: rockchip: Fix indentation on rk3399 haikou demo dtso

The regulator-cam-dovdd-1v8 uses spaces for indentation, where it should
use tabs. Fix this.

Fixes: 066a69d ("arm64: dts: rockchip: add overlay for RK3399 Puma Haikou Video Demo adapter")
Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
Link: https://patch.msgid.link/20251020091139.3652738-1-heiko@sntech.de
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

Author: Heiko Stuebner

arch/arm64/boot/dts/rockchip/rk3399-puma-haikou-video-demo.dtso

@@ -45,11 +45,11 @@
 
 	cam_dovdd_1v8: regulator-cam-dovdd-1v8 {
 		compatible = "regulator-fixed";
-	        gpio = <&pca9670 3 GPIO_ACTIVE_LOW>;
-	        regulator-max-microvolt = <1800000>;
-	        regulator-min-microvolt = <1800000>;
-	        regulator-name = "cam-dovdd-1v8";
-	        vin-supply = <&vcc1v8_video>;
+		gpio = <&pca9670 3 GPIO_ACTIVE_LOW>;
+		regulator-max-microvolt = <1800000>;
+		regulator-min-microvolt = <1800000>;
+		regulator-name = "cam-dovdd-1v8";
+		vin-supply = <&vcc1v8_video>;
 	};
 
 	cam_dvdd_1v2: regulator-cam-dvdd-1v2 {