imx: imx6qdl: dtsi: move U-Boot specific change to u-boot.dtsi

The changes were added by following patch:
commit <9002e735e717> ("imx: mx6sabresd: fix boot hang with video")
commit <f45ec8fcfb86> ("imx6: dts: add 'u-boot, dm-pre-reloc' to soc and ipu nodes")

Let's move the U-Boot specific change to imx6qdl-u-boot.dtsi

Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/arch/arm/dts/imx6qdl-u-boot.dtsi b/arch/arm/dts/imx6qdl-u-boot.dtsi
index e161ebb..1279cc2 100644
--- a/arch/arm/dts/imx6qdl-u-boot.dtsi
+++ b/arch/arm/dts/imx6qdl-u-boot.dtsi
@@ -6,10 +6,12 @@
 / {
 	aliases {
 		usb0 = &usbotg;
+		video0 = &ipu1;
 	};
 
 	soc {
 		u-boot,dm-spl;
+		u-boot,dm-pre-reloc;
 
 		aips-bus@2000000 {
 			u-boot,dm-spl;
@@ -31,3 +33,7 @@
 &iomuxc {
 	u-boot,dm-spl;
 };
+
+&ipu1 {
+	u-boot,dm-pre-reloc;
+};