ARM: kirkwood: Add device-tree for ib62x0

Import the dts files from Linux 4.17 and enable CONFIG_OF_CONTROL.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/configs/ib62x0_defconfig b/configs/ib62x0_defconfig
index cb629bb..20a26d4 100644
--- a/configs/ib62x0_defconfig
+++ b/configs/ib62x0_defconfig
@@ -3,6 +3,7 @@
 CONFIG_SYS_TEXT_BASE=0x600000
 CONFIG_TARGET_IB62X0=y
 CONFIG_IDENT_STRING=" RaidSonic ICY BOX IB-NAS62x0"
+CONFIG_DEFAULT_DEVICE_TREE="kirkwood-ib62x0"
 CONFIG_BOOTDELAY=3
 # CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_HUSH_PARSER=y
@@ -22,6 +23,7 @@
 CONFIG_MTDPARTS_DEFAULT="mtdparts=orion_nand:0xe0000@0x0(uboot),0x20000@0xe0000(uboot_env),-@0x100000(root)"
 CONFIG_CMD_UBI=y
 CONFIG_ISO_PARTITION=y
+CONFIG_OF_CONTROL=y
 CONFIG_ENV_IS_IN_NAND=y
 CONFIG_MVSATA_IDE=y
 # CONFIG_MMC is not set
@@ -32,4 +34,3 @@
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_STORAGE=y
 CONFIG_LZMA=y
-CONFIG_OF_LIBFDT=y