arm: highbank: Add devicetree files

Add an empty version of this file, so that we can at least build this
board when devicetrees are required.
Signed-off-by: NSimon Glass <sjg@chromium.org>

arch/arm/dts/Makefile

@@ -871,6 +871,8 @@ dtb-$(CONFIG_MX7) += imx7d-sdb.dtb \
 dtb-$(CONFIG_ARCH_MX7ULP) += imx7ulp-com.dtb \
 	imx7ulp-evk.dtb
 
+dtb-$(CONFIG_ARCH_HIGHBANK) += highbank.dtb
+
 dtb-$(CONFIG_ARCH_IMX8) += \
 	fsl-imx8qm-apalis.dtb \
 	fsl-imx8qm-mek.dtb \

arch/arm/dts/highbank.dts

+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Empty devicetree for highbank/midway
+ */
+
+/dts-v1/;
+
+/ {
+};

configs/highbank_defconfig

@@ -7,6 +7,7 @@ CONFIG_SYS_TEXT_BASE=0x00008000
 CONFIG_SYS_MALLOC_LEN=0x80000
 CONFIG_NR_DRAM_BANKS=2
 CONFIG_ENV_SIZE=0x2000
+CONFIG_DEFAULT_DEVICE_TREE="highbank"
 CONFIG_SYS_BOOTCOUNT_ADDR=0xfff3cf0c
 CONFIG_SYS_BOOTCOUNT_SINGLEWORD=y
 CONFIG_DISTRO_DEFAULTS=y