libfdt: migrate fdt_wip.c to a wrapper of scripts/dtc/libfdt/fdt_wip.c

Now, lib/libfdt/fdt_wip.c is the same as scripts/dtc/libfdt/fdt_wip.c

Change the former to a wrapper of the latter.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/Makefile b/tools/Makefile
index acbcd87..4d32fe5 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -61,11 +61,11 @@
 
 # The following files are synced with upstream DTC.
 # Use synced versions from scripts/dtc/libfdt/.
-LIBFDT_SRCS_SYNCED := fdt.c fdt_sw.c fdt_strerror.c fdt_empty_tree.c \
+LIBFDT_SRCS_SYNCED := fdt.c fdt_wip.c fdt_sw.c fdt_strerror.c fdt_empty_tree.c \
 		      fdt_addresses.c fdt_overlay.c
 # The following files are locally modified for U-Boot (unfotunately).
 # Use U-Boot own versions from lib/libfdt/.
-LIBFDT_SRCS_UNSYNCED := fdt_ro.c fdt_wip.c fdt_rw.c fdt_region.c
+LIBFDT_SRCS_UNSYNCED := fdt_ro.c fdt_rw.c fdt_region.c
 
 LIBFDT_OBJS := $(addprefix libfdt/, $(patsubst %.c, %.o, $(LIBFDT_SRCS_SYNCED))) \
 	       $(addprefix lib/libfdt/, $(patsubst %.c, %.o, $(LIBFDT_SRCS_UNSYNCED)))
diff --git a/tools/libfdt/fdt_wip.c b/tools/libfdt/fdt_wip.c
new file mode 100644
index 0000000..bad73ed
--- /dev/null
+++ b/tools/libfdt/fdt_wip.c
@@ -0,0 +1,2 @@
+#include "fdt_host.h"
+#include "../scripts/dtc/libfdt/fdt_wip.c"