ARM: dts: Add big-endian in nor node for ls1021a

NOR and IFC controller connectivity is big-endian.
So add big-endian field in nor device tree node allowing
IFC controller to read/write data from/to the flash correctly.
Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Acked-by: Li Yang <leoyang.li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/ls1021a-qds.dts

 /*
  * Copyright 2013-2014 Freescale Semiconductor, Inc.
+ * Copyright 2018 NXP
  *
  * This file is dual-licensed: you can use it either under the terms
  * of the GPL or the X11 license, at your option. Note that this dual
@@ -235,6 +236,7 @@ nor@0,0 {
 		#size-cells = <1>;
 		compatible = "cfi-flash";
 		reg = <0x0 0x0 0x8000000>;
+		big-endian;
 		bank-width = <2>;
 		device-width = <1>;
 	};

arch/arm/boot/dts/ls1021a-twr.dts

 /*
  * Copyright 2013-2014 Freescale Semiconductor, Inc.
+ * Copyright 2018 NXP
  *
  * This file is dual-licensed: you can use it either under the terms
  * of the GPL or the X11 license, at your option. Note that this dual
@@ -203,6 +204,7 @@ nor@0,0 {
 		#size-cells = <1>;
 		compatible = "cfi-flash";
 		reg = <0x0 0x0 0x8000000>;
+		big-endian;
 		bank-width = <2>;
 		device-width = <1>;
 	};