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/net_dropmon.h b/libc/kernel/uapi/linux/net_dropmon.h
index af0b976..aef1813 100644
--- a/libc/kernel/uapi/linux/net_dropmon.h
+++ b/libc/kernel/uapi/linux/net_dropmon.h
@@ -22,47 +22,48 @@
 #include <linux/netlink.h>
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct net_dm_drop_point {
- __u8 pc[8];
- __u32 count;
+  __u8 pc[8];
+  __u32 count;
 };
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
-#define is_drop_point_hw(x) do {  int ____i, ____j;  for (____i = 0; ____i < 8; i ____i++)  ____j |= x[____i];  ____j; } while (0)
+#define is_drop_point_hw(x) do { int ____i, ____j; for(____i = 0; ____i < 8; i ____i ++) ____j |= x[____i]; ____j; \
+} while(0)
 #define NET_DM_CFG_VERSION 0
 #define NET_DM_CFG_ALERT_COUNT 1
 #define NET_DM_CFG_ALERT_DELAY 2
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define NET_DM_CFG_MAX 3
 struct net_dm_config_entry {
- __u32 type;
- __u64 data __attribute__((aligned(8)));
+  __u32 type;
+  __u64 data __attribute__((aligned(8)));
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
 struct net_dm_config_msg {
- __u32 entries;
- struct net_dm_config_entry options[0];
+  __u32 entries;
+  struct net_dm_config_entry options[0];
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
 struct net_dm_alert_msg {
- __u32 entries;
- struct net_dm_drop_point points[0];
+  __u32 entries;
+  struct net_dm_drop_point points[0];
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
 struct net_dm_user_msg {
- union {
- struct net_dm_config_msg user;
+  union {
+    struct net_dm_config_msg user;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- struct net_dm_alert_msg alert;
- } u;
+    struct net_dm_alert_msg alert;
+  } u;
 };
 enum {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- NET_DM_CMD_UNSPEC = 0,
- NET_DM_CMD_ALERT,
- NET_DM_CMD_CONFIG,
- NET_DM_CMD_START,
+  NET_DM_CMD_UNSPEC = 0,
+  NET_DM_CMD_ALERT,
+  NET_DM_CMD_CONFIG,
+  NET_DM_CMD_START,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- NET_DM_CMD_STOP,
- _NET_DM_CMD_MAX,
+  NET_DM_CMD_STOP,
+  _NET_DM_CMD_MAX,
 };
 #define NET_DM_CMD_MAX (_NET_DM_CMD_MAX - 1)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */