libfdt: Fix sw_tree1 testcase

There is a bug in the sw_tree1 testcase / utility which puts two
"compatible" properties in one node in the output tree.  This patch
fixes the bug, and also adds a new test checking that the sw_tree1
output is equal to test_tree1.dtb as its supposed to be, which should
catch future errors of this type.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

tests/run_tests.sh

@@ -70,6 +70,7 @@ libfdt_tests () {
     run_test sw_tree1
     tree1_tests sw_tree1.test.dtb
     tree1_tests unfinished_tree1.test.dtb
+    run_test dtbs_equal_ordered test_tree1.dtb sw_tree1.test.dtb
 
     # fdt_move tests
     for tree in test_tree1.dtb sw_tree1.test.dtb unfinished_tree1.test.dtb; do

tests/sw_tree1.c

@@ -64,7 +64,6 @@ int main(int argc, char *argv[])
 	CHECK(fdt_begin_node(fdt, "subsubnode"));
 	CHECK(fdt_property(fdt, "compatible", "subsubnode1\0subsubnode",
 			   23));
-	CHECK(fdt_property_string(fdt, "compatible", "subsubnode1\0"));
 	CHECK(fdt_property_typed(fdt, "prop-int", TEST_VALUE_1));
 	CHECK(fdt_end_node(fdt));
 	CHECK(fdt_end_node(fdt));