dtoc: Improve internal error for Refresh()

Add the node name too so it is easy to see which node failed.
Signed-off-by: NSimon Glass <sjg@chromium.org>

tools/dtoc/fdt.py

@@ -339,8 +339,8 @@ class Node:
             p = fdt_obj.get_property_by_offset(poffset)
             prop = self.props.get(p.name)
             if not prop:
-                raise ValueError("Internal error, property '%s' missing, "
-                                 'offset %d' % (p.name, poffset))
+                raise ValueError("Internal error, node '%s' property '%s' missing, "
+                                 'offset %d' % (self.path, p.name, poffset))
             prop.RefreshOffset(poffset)
             poffset = fdt_obj.next_property_offset(poffset, QUIET_NOTFOUND)
 

tools/dtoc/test_fdt.py

@@ -209,7 +209,7 @@ class TestNode(unittest.TestCase):
         del self.node.props['notstring']
         with self.assertRaises(ValueError) as e:
             self.dtb.Refresh()
-        self.assertIn("Internal error, property 'notstring' missing, offset ",
+        self.assertIn("Internal error, node '/spl-test' property 'notstring' missing, offset ",
                       str(e.exception))
 
     def testLookupPhandle(self):