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/can/gw.h b/libc/kernel/uapi/linux/can/gw.h
index cafc1ec..37703fe 100644
--- a/libc/kernel/uapi/linux/can/gw.h
+++ b/libc/kernel/uapi/linux/can/gw.h
@@ -22,38 +22,38 @@
 #include <linux/can.h>
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 struct rtcanmsg {
- __u8 can_family;
- __u8 gwtype;
- __u16 flags;
+  __u8 can_family;
+  __u8 gwtype;
+  __u16 flags;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
 enum {
- CGW_TYPE_UNSPEC,
- CGW_TYPE_CAN_CAN,
+  CGW_TYPE_UNSPEC,
+  CGW_TYPE_CAN_CAN,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __CGW_TYPE_MAX
+  __CGW_TYPE_MAX
 };
 #define CGW_TYPE_MAX (__CGW_TYPE_MAX - 1)
 enum {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- CGW_UNSPEC,
- CGW_MOD_AND,
- CGW_MOD_OR,
- CGW_MOD_XOR,
+  CGW_UNSPEC,
+  CGW_MOD_AND,
+  CGW_MOD_OR,
+  CGW_MOD_XOR,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- CGW_MOD_SET,
- CGW_CS_XOR,
- CGW_CS_CRC8,
- CGW_HANDLED,
+  CGW_MOD_SET,
+  CGW_CS_XOR,
+  CGW_CS_CRC8,
+  CGW_HANDLED,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- CGW_DROPPED,
- CGW_SRC_IF,
- CGW_DST_IF,
- CGW_FILTER,
+  CGW_DROPPED,
+  CGW_SRC_IF,
+  CGW_DST_IF,
+  CGW_FILTER,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- CGW_DELETED,
- CGW_LIM_HOPS,
- __CGW_MAX
+  CGW_DELETED,
+  CGW_LIM_HOPS,
+  __CGW_MAX
 };
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CGW_MAX (__CGW_MAX - 1)
@@ -69,41 +69,41 @@
 #define CGW_FRAME_MODS 3
 #define MAX_MODFUNCTIONS (CGW_MOD_FUNCS * CGW_FRAME_MODS)
 struct cgw_frame_mod {
- struct can_frame cf;
+  struct can_frame cf;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __u8 modtype;
+  __u8 modtype;
 } __attribute__((packed));
 #define CGW_MODATTR_LEN sizeof(struct cgw_frame_mod)
 struct cgw_csum_xor {
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __s8 from_idx;
- __s8 to_idx;
- __s8 result_idx;
- __u8 init_xor_val;
+  __s8 from_idx;
+  __s8 to_idx;
+  __s8 result_idx;
+  __u8 init_xor_val;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 } __attribute__((packed));
 struct cgw_csum_crc8 {
- __s8 from_idx;
- __s8 to_idx;
+  __s8 from_idx;
+  __s8 to_idx;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __s8 result_idx;
- __u8 init_crc_val;
- __u8 final_xor_val;
- __u8 crctab[256];
+  __s8 result_idx;
+  __u8 init_crc_val;
+  __u8 final_xor_val;
+  __u8 crctab[256];
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- __u8 profile;
- __u8 profile_data[20];
+  __u8 profile;
+  __u8 profile_data[20];
 } __attribute__((packed));
 #define CGW_CS_XOR_LEN sizeof(struct cgw_csum_xor)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CGW_CS_CRC8_LEN sizeof(struct cgw_csum_crc8)
 enum {
- CGW_CRC8PRF_UNSPEC,
- CGW_CRC8PRF_1U8,
+  CGW_CRC8PRF_UNSPEC,
+  CGW_CRC8PRF_1U8,
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
- CGW_CRC8PRF_16U8,
- CGW_CRC8PRF_SFFID_XOR,
- __CGW_CRC8PRF_MAX
+  CGW_CRC8PRF_16U8,
+  CGW_CRC8PRF_SFFID_XOR,
+  __CGW_CRC8PRF_MAX
 };
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define CGW_CRC8PRF_MAX (__CGW_CRC8PRF_MAX - 1)