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/sw_sync.h b/libc/kernel/uapi/linux/sw_sync.h
index 8ab531c..ac50000 100644
--- a/libc/kernel/uapi/linux/sw_sync.h
+++ b/libc/kernel/uapi/linux/sw_sync.h
@@ -21,13 +21,13 @@
 #include <linux/types.h>
 struct sw_sync_create_fence_data {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __u32 value;
- char name[32];
- __s32 fence;
+  __u32 value;
+  char name[32];
+  __s32 fence;
 };
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define SW_SYNC_IOC_MAGIC 'W'
-#define SW_SYNC_IOC_CREATE_FENCE _IOWR(SW_SYNC_IOC_MAGIC, 0,  struct sw_sync_create_fence_data)
+#define SW_SYNC_IOC_CREATE_FENCE _IOWR(SW_SYNC_IOC_MAGIC, 0, struct sw_sync_create_fence_data)
 #define SW_SYNC_IOC_INC _IOW(SW_SYNC_IOC_MAGIC, 1, __u32)
 #endif
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */