clearfog: Use a custom DTS file

It was necessary to use a differently named DTS file, unfortunately, and
that also led to an incompatible change in the bootloader. A full flash
is therefore required. I wasn't able to use the same file name if I want
to avoid duplication by just including the original DTS board file, and
adding some post hooks for copying just sounded ugly.

Change-Id: Ia8c11a3f43033a18ed2a8dbae996512e38358367
diff --git a/configs/czechlight_clearfog_defconfig b/configs/czechlight_clearfog_defconfig
index 72a0984..5ab8900 100644
--- a/configs/czechlight_clearfog_defconfig
+++ b/configs/czechlight_clearfog_defconfig
@@ -21,7 +21,8 @@
 BR2_LINUX_KERNEL_DEFCONFIG="mvebu_v7"
 BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="$(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/clearfog/linux.fragment $(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/common/kconfig"
 BR2_LINUX_KERNEL_DTS_SUPPORT=y
-BR2_LINUX_KERNEL_INTREE_DTS_NAME="armada-388-clearfog-base"
+BR2_LINUX_KERNEL_USE_CUSTOM_DTS=y
+BR2_LINUX_KERNEL_CUSTOM_DTS_PATH="$(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/clearfog/czechlight-clearfog.dts"
 BR2_LINUX_KERNEL_INSTALL_TARGET=y
 BR2_PACKAGE_LINUX_TOOLS_GPIO=y
 BR2_PACKAGE_LINUX_TOOLS_PERF=y