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/if_fc.h b/libc/kernel/uapi/linux/if_fc.h
index 527c15e..7584fa2 100644
--- a/libc/kernel/uapi/linux/if_fc.h
+++ b/libc/kernel/uapi/linux/if_fc.h
@@ -21,23 +21,23 @@
 #include <linux/types.h>
 #define FC_ALEN 6
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define FC_HLEN (sizeof(struct fch_hdr)+sizeof(struct fcllc))
+#define FC_HLEN (sizeof(struct fch_hdr) + sizeof(struct fcllc))
 #define FC_ID_LEN 3
 #define EXTENDED_SAP 0xAA
 #define UI_CMD 0x03
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct fch_hdr {
- __u8 daddr[FC_ALEN];
- __u8 saddr[FC_ALEN];
+  __u8 daddr[FC_ALEN];
+  __u8 saddr[FC_ALEN];
 };
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct fcllc {
- __u8 dsap;
- __u8 ssap;
- __u8 llc;
+  __u8 dsap;
+  __u8 ssap;
+  __u8 llc;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __u8 protid[3];
- __be16 ethertype;
+  __u8 protid[3];
+  __be16 ethertype;
 };
 #endif
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */