[GOLD] Repair include/dwarf2.def breakage

[Alan Modra]

Jan's libiberty patch broke gold.  Applying as obvious.

	* dwarf.h (DW_FIRST_IDX, DW_IDX, DW_IDX_DUP, DW_END_IDX): Define.

diff --git a/elfcpp/dwarf.h b/elfcpp/dwarf.h
index 364b774..85004a4 100644
--- a/elfcpp/dwarf.h
+++ b/elfcpp/dwarf.h
@@ -74,6 +74,12 @@ namespace elfcpp
 #define DW_CFA(name, value) , name = value
 #define DW_END_CFA };
 
+#define DW_FIRST_IDX(name, value) enum dwarf_name_index_attribute { \
+  name = value
+#define DW_IDX(name, value) , name = value
+#define DW_IDX_DUP(name, value) , name = value
+#define DW_END_IDX };
+
 #include "dwarf2.def"
 
 #undef DW_FIRST_TAG

-- 
Alan Modra
Australia Development Lab, IBM