imx: mx6ul_14x14_evk: convert to DM_VIDEO

To support DM_VIDEO,
 Add display node for lcdif
 Drop board iomuxc settings.
 Enable DM_VIDEO

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
diff --git a/arch/arm/dts/imx6ul-14x14-evk-u-boot.dtsi b/arch/arm/dts/imx6ul-14x14-evk-u-boot.dtsi
index 77cb461..e9efdb9 100644
--- a/arch/arm/dts/imx6ul-14x14-evk-u-boot.dtsi
+++ b/arch/arm/dts/imx6ul-14x14-evk-u-boot.dtsi
@@ -3,8 +3,55 @@
  * Copyright 2018 NXP
  */
 
+&{/aliases} {
+	u-boot,dm-pre-reloc;
+	display0 = &lcdif;
+};
+
 &qspi {
 	flash0: n25q256a@0 {
 		compatible = "jedec,spi-nor";
 	};
-};
\ No newline at end of file
+};
+
+&{/soc} {
+	u-boot,dm-pre-reloc;
+};
+
+&aips2 {
+	u-boot,dm-pre-reloc;
+};
+
+&iomuxc {
+	u-boot,dm-pre-reloc;
+};
+
+&lcdif {
+	display = <&display0>;
+	u-boot,dm-pre-reloc;
+
+	display0: display@0 {
+		bits-per-pixel = <16>;
+		bus-width = <24>;
+
+		display-timings {
+			native-mode = <&timing0>;
+
+			timing0: timing0 {
+				clock-frequency = <9200000>;
+				hactive = <480>;
+				vactive = <272>;
+				hfront-porch = <8>;
+				hback-porch = <4>;
+				hsync-len = <41>;
+				vback-porch = <2>;
+				vfront-porch = <4>;
+				vsync-len = <10>;
+				hsync-active = <0>;
+				vsync-active = <0>;
+				de-active = <1>;
+				pixelclk-active = <0>;
+			};
+		};
+	};
+};