Merge libfdt into dtc.

Having pulled the libfdt repository into dtc, merge the makefiles and
testsuites so that they build together usefully.

tests/truncated_property.c

@@ -0,0 +1,49 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ *	Testcase for misbehaviour on a truncated property
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "tests.h"
+#include "testdata.h"
+
+int main(int argc, char *argv[])
+{
+	void *fdt = &_truncated_property;
+	const void *prop;
+	int err;
+	int len;
+
+	test_init(argc, argv);
+
+	prop = fdt_getprop(fdt, 0, "truncated", &len);
+	if (prop)
+		FAIL("fdt_getprop() succeeded on truncated property");
+	if (len != -FDT_ERR_BADSTRUCTURE)
+		FAIL("fdt_getprop() failed with \"%s\" instead of \"%s\"",
+		     fdt_strerror(err), fdt_strerror(-FDT_ERR_BADSTRUCTURE));
+
+	PASS();
+}