Make libelf not fail on unknown elf notes.

Signed-off-by: Gerd Hoffmann <kraxel@suse.de>
diff -r ad9bbd103034 xen/common/libelf/libelf-dominfo.c
--- a/xen/common/libelf/libelf-dominfo.c	Fri Feb 09 18:19:24 2007 +0000
+++ b/xen/common/libelf/libelf-dominfo.c	Mon Feb 12 15:05:11 2007 +0100
@@ -107,9 +107,9 @@ int elf_xen_parse_note(struct elf_binary
     if ((type >= sizeof(note_desc) / sizeof(note_desc[0])) ||
 	(NULL == note_desc[type].name))
     {
-	elf_err(elf, "%s: unknown xen elf note (0x%x)\n",
+	elf_msg(elf, "%s: unknown xen elf note (0x%x)\n",
 		__FUNCTION__, type);
-	return -1;
+	return 0;
     }
 
     if (note_desc[type].str)