Switch kernel header parsing to python libclang

Replace the tokenizer in cpp.py with libclang.

Bug: 18937958
Change-Id: I27630904c6d2849418cd5ca3d3c612ec3078686d
diff --git a/libc/kernel/uapi/linux/wanrouter.h b/libc/kernel/uapi/linux/wanrouter.h
index d879600..d4f4821 100644
--- a/libc/kernel/uapi/linux/wanrouter.h
+++ b/libc/kernel/uapi/linux/wanrouter.h
@@ -18,13 +18,12 @@
  ****************************************************************************/
 #ifndef _UAPI_ROUTER_H
 #define _UAPI_ROUTER_H
-enum wan_states
-{
+enum wan_states {
+  WAN_UNCONFIGURED,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- WAN_UNCONFIGURED,
- WAN_DISCONNECTED,
- WAN_CONNECTING,
- WAN_CONNECTED
-/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+  WAN_DISCONNECTED,
+  WAN_CONNECTING,
+  WAN_CONNECTED
 };
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif