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/asm-mips/asm/shmbuf.h b/libc/kernel/uapi/asm-mips/asm/shmbuf.h
index 3f7d0b1..8d41650 100644
--- a/libc/kernel/uapi/asm-mips/asm/shmbuf.h
+++ b/libc/kernel/uapi/asm-mips/asm/shmbuf.h
@@ -19,32 +19,32 @@
 #ifndef _ASM_SHMBUF_H
 #define _ASM_SHMBUF_H
 struct shmid64_ds {
- struct ipc64_perm shm_perm;
+  struct ipc64_perm shm_perm;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- size_t shm_segsz;
- __kernel_time_t shm_atime;
- __kernel_time_t shm_dtime;
- __kernel_time_t shm_ctime;
+  size_t shm_segsz;
+  __kernel_time_t shm_atime;
+  __kernel_time_t shm_dtime;
+  __kernel_time_t shm_ctime;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __kernel_pid_t shm_cpid;
- __kernel_pid_t shm_lpid;
- unsigned long shm_nattch;
- unsigned long __unused1;
+  __kernel_pid_t shm_cpid;
+  __kernel_pid_t shm_lpid;
+  unsigned long shm_nattch;
+  unsigned long __unused1;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- unsigned long __unused2;
+  unsigned long __unused2;
 };
 struct shminfo64 {
- unsigned long shmmax;
+  unsigned long shmmax;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- unsigned long shmmin;
- unsigned long shmmni;
- unsigned long shmseg;
- unsigned long shmall;
+  unsigned long shmmin;
+  unsigned long shmmni;
+  unsigned long shmseg;
+  unsigned long shmall;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- unsigned long __unused1;
- unsigned long __unused2;
- unsigned long __unused3;
- unsigned long __unused4;
+  unsigned long __unused1;
+  unsigned long __unused2;
+  unsigned long __unused3;
+  unsigned long __unused4;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
 #endif