ARM: add SBx81LIFKW board

This is a series of line cards for Allied Telesis's SBx8100 chassis
switch. The CPU block is common to the SBx81GS24a, SBx81XS6, SBx81XS16
and SBx81GT40 cards collectively referred to as SBx81LIFKW in u-boot.

Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/board/alliedtelesis/SBx81LIFKW/kwbimage.cfg b/board/alliedtelesis/SBx81LIFKW/kwbimage.cfg
new file mode 100644
index 0000000..9726f15
--- /dev/null
+++ b/board/alliedtelesis/SBx81LIFKW/kwbimage.cfg
@@ -0,0 +1,47 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# (C) Copyright 2018 Allied Telesis
+#
+# Refer docs/README.kwimage for more details about how-to configure
+# and create kirkwood boot image
+#
+
+# Boot Media configurations
+BOOT_FROM	spi	# Boot from SPI flash
+
+# SOC registers configuration using bootrom header extension
+# Maximum KWBIMAGE_MAX_CONFIG configurations allowed
+DATA 0xffd100e0 0x1b1b1b1b
+DATA 0xffd20134 0xffffffff
+DATA 0xffd20138 0x009fffff
+DATA 0xffd20154 0x00000000
+DATA 0xffd2014c 0x00000000
+DATA 0xffd20148 0x00000001
+
+# Dram initalization for 1 x x16
+#  DDR II Micron part number MT47H64M16HR-3
+#  MClk 333MHz, Size 128MB, ECC disable
+#
+DATA 0xffd01400 0x43000618
+DATA 0xffd01404 0x35143000
+DATA 0xffd01408 0x11012227
+DATA 0xffd0140c 0x00000819
+DATA 0xffd01410 0x0000000d
+DATA 0xffd01414 0x00000000
+DATA 0xffd01418 0x00000000
+DATA 0xffd0141c 0x00000632
+DATA 0xffd01420 0x00000040
+DATA 0xffd01424 0x0000f07f
+DATA 0xffd01500 0x00000000	# SDRAM CS[0] Base address at 0x00000000
+DATA 0xffd01504 0x07FFFFF1	# SDRAM CS[0] Size 128MiB
+DATA 0xffd01508 0x10000000
+DATA 0xffd0150c 0x00FFFFF4	# SDRAM CS[1] Size, window disabled
+DATA 0xffd01514 0x00FFFFF8	# SDRAM CS[2] Size, window disabled
+DATA 0xffd0151c 0x00FFFFFC	# SDRAM CS[3] Size, window disabled
+DATA 0xffd01494 0x00030000
+DATA 0xffd01498 0x00000000
+DATA 0xffd0149c 0x0000e803
+DATA 0xffd01480 0x00000001
+
+# End of Header extension
+DATA 0x0 0x0