arm64: dts: rockchip: fix rk3399 dsi node

Use generic node name for rk3399.dtsi dsi node.
With the conversion of rockchip,dw-mipi-dsi.yaml a port@1 node
is required, so add a node with label mipi_out.
Also restyle.
Signed-off-by: NJohan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/1e019e9e-a8da-3d57-2770-f6b81bbbf591@gmail.comSigned-off-by: NHeiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3399.dtsi

@@ -1954,7 +1954,7 @@
 		};
 	};
 
-	mipi_dsi: mipi@ff960000 {
+	mipi_dsi: dsi@ff960000 {
 		compatible = "rockchip,rk3399-mipi-dsi", "snps,dw-mipi-dsi";
 		reg = <0x0 0xff960000 0x0 0x8000>;
 		interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH 0>;
@@ -1982,15 +1982,20 @@
 					reg = <0>;
 					remote-endpoint = <&vopb_out_mipi>;
 				};
+
 				mipi_in_vopl: endpoint@1 {
 					reg = <1>;
 					remote-endpoint = <&vopl_out_mipi>;
 				};
 			};
+
+			mipi_out: port@1 {
+				reg = <1>;
+			};
 		};
 	};
 
-	mipi_dsi1: mipi@ff968000 {
+	mipi_dsi1: dsi@ff968000 {
 		compatible = "rockchip,rk3399-mipi-dsi", "snps,dw-mipi-dsi";
 		reg = <0x0 0xff968000 0x0 0x8000>;
 		interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH 0>;
@@ -2025,6 +2030,10 @@
 					remote-endpoint = <&vopl_out_mipi1>;
 				};
 			};
+
+			mipi1_out: port@1 {
+				reg = <1>;
+			};
 		};
 	};