ARM: dts: exynos: Use Exynos5422 compatible for the DSI controller

The driver adding support for Exynos5422/Exynos5800 DSI controller was
merged in 2016, yet it wasn't actually used. Add a proper compatible
for it.

Signed-off-by: Markuss Broks <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Krzysztof Kozlowski <[e-mail]>

arch/arm/boot/dts/exynos5420.dtsi

···
 			#phy-cells = <1>;
 		};
 
-		dsi@14500000 {
+		dsi: dsi@14500000 {
 			compatible = "samsung,exynos5410-mipi-dsi";
 			reg = <0x14500000 0x10000>;
 			interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>;

arch/arm/boot/dts/exynos5800.dtsi

···
 	};
 };
 
+&dsi {
+	compatible = "samsung,exynos5422-mipi-dsi";
+};
+
 &mfc {
 	compatible = "samsung,mfc-v8";
 };