layerscape: add Traverse LS1043-S support

The Traverse LS1043-S board is a router board based on
NXP/Freescale's LS1043 SoC, with 4x1GBase-T, 1 SFP and 1 SFP+,
as well as miniPCIe and M.2 LTE.

Unlike the Layerscape reference boards, the LS1043-S board has
NAND flash and uses the mainline U-Boot.

This patch implements support for the LS1043-S board, as well as
the earlier LS1043-V board. It is our intention that all boards
in this family (LS1043-S and later, Five64) will boot the same binary.

Not included in this patchset are the hwmon drivers not in the kernel
(emc1704,pac1934) or the bootloader.

Signed-off-by: Mathew McBride <matt@traverse.com.au>

target/linux/layerscape/base-files/lib/preinit/05_layerscape_reorder_eth

@@ -0,0 +1,28 @@
+#!/bin/sh
+
+reorder_layerscape_interfaces() {
+	if [ ! -f /tmp/sysinfo/board_name ]; then
+		echo "No board name found, not doing reorder_layerscape_interfaces"
+		return 0
+	fi
+
+	board=$(cat /tmp/sysinfo/board_name)
+	case "$board" in
+	"traverse,ls1043v" | \
+	"traverse,ls1043s")
+
+		# Reorder ethernet interfaces to match the physical order
+		ip link set eth2 name fm1-mac3
+		ip link set eth4 name eth2
+		ip link set eth3 name fm1-mac4
+		ip link set eth5 name eth3
+		ip link set fm1-mac3 name eth4
+		ip link set fm1-mac4 name eth5
+		;;
+	default)
+		echo "Unknown board $board"
+		;;
+	esac
+}
+
+boot_hook_add preinit_main reorder_layerscape_interfaces