arm64: dts: rockchip: rk3588s-tablet: raise avdd_1v2_cam_s0 voltage

Tablet's rear camera convert fpc decrease the dvdd,
so need raise nldo4 voltage to ensure rear camera ov50c40 normal.

Signed-off-by: Wang Panzhenzhuan <randy.wang@rock-chips.com>
Change-Id: Id36f920dd80d9072cf3265a6cc992ae648c77142

arch/arm64/boot/dts/rockchip/rk3588s-tablet.dtsi

@@ -228,6 +228,12 @@
 	};
 };
 
+&avdd_1v2_cam_s0 {
+	regulator-min-microvolt = <1300000>;
+	regulator-max-microvolt = <1300000>;
+	regulator-ramp-delay = <12500>;
+};
+
 &combphy0_ps {
 	status = "okay";
 };