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/fou.h b/libc/kernel/uapi/linux/fou.h
index 080e9e5..a31a4ad 100644
--- a/libc/kernel/uapi/linux/fou.h
+++ b/libc/kernel/uapi/linux/fou.h
@@ -22,28 +22,28 @@
 #define FOU_GENL_VERSION 0x1
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 enum {
- FOU_ATTR_UNSPEC,
- FOU_ATTR_PORT,
- FOU_ATTR_AF,
+  FOU_ATTR_UNSPEC,
+  FOU_ATTR_PORT,
+  FOU_ATTR_AF,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- FOU_ATTR_IPPROTO,
- FOU_ATTR_TYPE,
- __FOU_ATTR_MAX,
+  FOU_ATTR_IPPROTO,
+  FOU_ATTR_TYPE,
+  __FOU_ATTR_MAX,
 };
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FOU_ATTR_MAX (__FOU_ATTR_MAX - 1)
 enum {
- FOU_CMD_UNSPEC,
- FOU_CMD_ADD,
+  FOU_CMD_UNSPEC,
+  FOU_CMD_ADD,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- FOU_CMD_DEL,
- __FOU_CMD_MAX,
+  FOU_CMD_DEL,
+  __FOU_CMD_MAX,
 };
 enum {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- FOU_ENCAP_UNSPEC,
- FOU_ENCAP_DIRECT,
- FOU_ENCAP_GUE,
+  FOU_ENCAP_UNSPEC,
+  FOU_ENCAP_DIRECT,
+  FOU_ENCAP_GUE,
 };
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define FOU_CMD_MAX (__FOU_CMD_MAX - 1)