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/nbd.h b/libc/kernel/uapi/linux/nbd.h
index 53736e9..588fbd8 100644
--- a/libc/kernel/uapi/linux/nbd.h
+++ b/libc/kernel/uapi/linux/nbd.h
@@ -19,27 +19,27 @@
 #ifndef _UAPILINUX_NBD_H
 #define _UAPILINUX_NBD_H
 #include <linux/types.h>
-#define NBD_SET_SOCK _IO( 0xab, 0 )
+#define NBD_SET_SOCK _IO(0xab, 0)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define NBD_SET_BLKSIZE _IO( 0xab, 1 )
-#define NBD_SET_SIZE _IO( 0xab, 2 )
-#define NBD_DO_IT _IO( 0xab, 3 )
-#define NBD_CLEAR_SOCK _IO( 0xab, 4 )
+#define NBD_SET_BLKSIZE _IO(0xab, 1)
+#define NBD_SET_SIZE _IO(0xab, 2)
+#define NBD_DO_IT _IO(0xab, 3)
+#define NBD_CLEAR_SOCK _IO(0xab, 4)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define NBD_CLEAR_QUE _IO( 0xab, 5 )
-#define NBD_PRINT_DEBUG _IO( 0xab, 6 )
-#define NBD_SET_SIZE_BLOCKS _IO( 0xab, 7 )
-#define NBD_DISCONNECT _IO( 0xab, 8 )
+#define NBD_CLEAR_QUE _IO(0xab, 5)
+#define NBD_PRINT_DEBUG _IO(0xab, 6)
+#define NBD_SET_SIZE_BLOCKS _IO(0xab, 7)
+#define NBD_DISCONNECT _IO(0xab, 8)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define NBD_SET_TIMEOUT _IO( 0xab, 9 )
-#define NBD_SET_FLAGS _IO( 0xab, 10)
+#define NBD_SET_TIMEOUT _IO(0xab, 9)
+#define NBD_SET_FLAGS _IO(0xab, 10)
 enum {
- NBD_CMD_READ = 0,
+  NBD_CMD_READ = 0,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- NBD_CMD_WRITE = 1,
- NBD_CMD_DISC = 2,
- NBD_CMD_FLUSH = 3,
- NBD_CMD_TRIM = 4
+  NBD_CMD_WRITE = 1,
+  NBD_CMD_DISC = 2,
+  NBD_CMD_FLUSH = 3,
+  NBD_CMD_TRIM = 4
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
 #define NBD_FLAG_HAS_FLAGS (1 << 0)
@@ -52,18 +52,18 @@
 #define NBD_REPLY_MAGIC 0x67446698
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct nbd_request {
- __be32 magic;
- __be32 type;
- char handle[8];
+  __be32 magic;
+  __be32 type;
+  char handle[8];
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __be64 from;
- __be32 len;
+  __be64 from;
+  __be32 len;
 } __attribute__((packed));
 struct nbd_reply {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __be32 magic;
- __be32 error;
- char handle[8];
+  __be32 magic;
+  __be32 error;
+  char handle[8];
 };
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #endif