Have tests read example tree from a generated file, rather than link it in.
This makes the tests more flexible to re-use for testing the output from
the write tests.
diff --git a/tests/setprop_inplace.c b/tests/setprop_inplace.c
index ce19bcc..61de789 100644
--- a/tests/setprop_inplace.c
+++ b/tests/setprop_inplace.c
@@ -31,13 +31,14 @@
 
 int main(int argc, char *argv[])
 {
-	struct fdt_header *fdt = &_test_tree1;
+	struct fdt_header *fdt;
 	uint32_t *intp;
 	char *strp, *xstr;
 	int xlen, i;
 	int err;
 
 	test_init(argc, argv);
+	fdt = load_blob_arg(argc, argv);
 
 	intp = check_getprop_typed(fdt, 0, "prop-int", TEST_VALUE_1);