boot: Move fdt_support to boot/

This relates to booting since it fixes up the devicetree for the OS. Move
it into the boot/ directory.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/boot/Makefile b/boot/Makefile
index 10f0157..f15a161 100644
--- a/boot/Makefile
+++ b/boot/Makefile
@@ -16,6 +16,7 @@
 endif
 
 obj-y += image.o image-board.o
+
 obj-$(CONFIG_ANDROID_AB) += android_ab.o
 obj-$(CONFIG_ANDROID_BOOT_IMAGE) += image-android.o image-android-dt.o
 
@@ -37,6 +38,8 @@
 obj-$(CONFIG_$(SPL_TPL_)CEDIT) += cedit.o
 endif
 
+obj-$(CONFIG_$(SPL_TPL_)OF_LIBFDT) += fdt_support.o
+
 obj-$(CONFIG_$(SPL_TPL_)OF_LIBFDT) += image-fdt.o
 obj-$(CONFIG_$(SPL_TPL_)FIT_SIGNATURE) += fdt_region.o
 obj-$(CONFIG_$(SPL_TPL_)FIT) += image-fit.o